50 results on '"Lonic, D"'
Search Results
2. A favorable donor site in microsurgery: Nerve and vein graft harvest from the dorsum of the foot.
- Author
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Wenzel, C., Brix, E., Heidekrueger, P., Lonic, D., Lamby, P., Klein, S.M., Anker, A., Taeger, C., Prantl, L., and Kehrer, A.
- Subjects
NERVE grafting ,MICROSURGERY ,BRIDGE defects ,HAND injuries ,FOOT injuries ,NERVES - Abstract
BACKGROUND AND OBJECTIVES: In complex hand traumas nerves and vessels are often destructed without the possibility for primary repair. For bridging defects of nerves, veins and arteries grafts are necessary. Commonly nerve and vein grafts from adjacent donor sites as the wrist, forearm or cubital region are harvested. METHODS: This study is a retrospective cohort study. Between 2017 and 2019, 10 patients with complex hand injuries were treated. There were 8 males and 2 females, with an average age of 39 years (range 8–63 years). In all cases grafts were used of the dorsum of the foot for reconstructing of the severed digital nerves and arteries. All donor sites could be closed primarily. RESULTS: In 100% of cases nerves and veins of the dorsum of the foot showed a good size match as well as adequate length for a sufficient repair. The overall Hand Injury Severity Score (HISS) was determined with a median of 86 (range 57 to 286). In the area of the donor site no relevant complications were seen. CONCLUSIONS: In complex hand injuries the dorsum of the foot is a favorable donor site for nerve and vein graft harvest. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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3. Simultane Nasenkonturierung mittels autologer Fetttransplantation bei bimaxillären Umstellungsosteotomien: Quantifizierung der Retentionsraten mittels 3D-Bildgebung
- Author
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Lonic, D, Heidekrüger, P, Kehrer, A, Prantl, L, Lo, LJ, Chang, FCS, Lonic, D, Heidekrüger, P, Kehrer, A, Prantl, L, Lo, LJ, and Chang, FCS
- Published
- 2019
4. Präoperative Planung und postoperative Quantifizierung von mikro-autologem Fetttransfer (MAFT) im Gesichtsbereich mittels 3D-Fotogrammetrie: Erste Ergebnisse
- Author
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Kehrer, A, Lonic, D, Prantl, L, and Loeffelbein, D
- Subjects
ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Fragestellung: Bei der Behandlung von Gesichtsasymmetrien aufgrund von Traumata, Tumoren oder vorbestehenden ästhetischen Dysbalancen gewinnen die Konturierung mittels Lipofilling und die Analyse durch 3D-fotogrammetrische Verfahren immer mehr an Bedeutung. Wir präsentieren ein gemischtes [zum vollständigen Text gelangen Sie über die oben angegebene URL], 49. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 23. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
- Published
- 2018
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5. Impact of intraoperative use of vasopressors in lower extremity reconstruction: Single centre analysis of 437 free gracilis muscle and fasciocutaneous anterolateral thigh flaps
- Author
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Heine-Geldern, A., primary, Broer, P.N., additional, Prantl, L., additional, Brebant, V., additional, Anker, A.M., additional, Kehrer, A., additional, Thiha, A., additional, Lonic, D., additional, Ehrl, D., additional, Ninkovic, M., additional, and Heidekrueger, P.I., additional
- Published
- 2019
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6. Optimierung Perforator-Gefäßultraschall im Vergleich FKDS, Power-Doppler und B-Flow: Relevanz der Flussparameter
- Author
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Geis, S, Jung, EM, Kehrer, A, Lonic, D, Taeger, C, Prantl, L, Mandlik, V, Geis, S, Jung, EM, Kehrer, A, Lonic, D, Taeger, C, Prantl, L, and Mandlik, V
- Published
- 2018
7. Scarpa-Fasziengraft als Versiegelung der mukoperiostalen Tasche beim Sekundären Alveolären Bone Grafting: eine kontrollierte retrospektive Outcome-Studie
- Author
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Lonic, D and Lo, LJ
- Subjects
ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Fragestellung: Sekundäres Alveoläres Bone Grafting ist der Goldstandard bei der Behandlung alveolärer Spalten bei Lippen-Kiefer-Gaumenspalten. Wir stellen eine neue Methode zur Versiegelung der mukoperiostalen Tasche mit Scarpa-Fasziengraft vor, welche die Empfängerstelle komplett[zum vollständigen Text gelangen Sie über die oben angegebene URL], 48. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 55. Jahrestagung der Österreichischen Gesellschaft für Plastische, Ästhetische und Rekonstruktive Chirurgie, 22. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
- Published
- 2017
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8. Die kraniofaziale Chirurgie im Kindesalter - Behandlungsoptionen und peroperatives Management im Wandel der Zeit
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von Gernet, S, Lonic, D, Mühlbauer, W, Kaulfersch, S, Nematollahi, N, Ninkovic, M, von Gernet, S, Lonic, D, Mühlbauer, W, Kaulfersch, S, Nematollahi, N, and Ninkovic, M
- Published
- 2015
9. Die Behandlung von Knochendefekten am wachsenden kindlichen Schädel
- Author
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von Gernet, S, Lonic, D, Ninkovic, M, von Gernet, S, Lonic, D, and Ninkovic, M
- Published
- 2015
10. Transsuturale Mittelgesichtsdistraktion bei syndromalen Kraniofaziodysostosen im ersten Lebensjahr: Erfahrungen der letzten 12 Jahre
- Author
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Lonic, D, von Gernet, S, Dornseifer, U, Fairley, J, Mühlbauer, W, and Ninkovic, M
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ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Einleitung: Die Mittelgesichtsdistraktion im ersten Lebensjahr bei syndromalen Kraniofaziodysostosen wird in unserer Klinik seit 1993 praktiziert. Dabei wird mittels interner Distraktoren das Mittelgesicht über einen Zeitraum von drei bis vier Wochen nach dem primären frontoorbitalen Advan[for full text, please go to the a.m. URL], 49. Jahrestagung der Österreichischen Gesellschaft für Plastische, Ästhetische und Rekonstruktive Chirurgie (ÖGPÄRC), 42. Jahrestagung der Deutschen Gesellschaft der Plastischen, Rekonstruktiven und Ästhetischen Chirurgen (DGPRÄC), 16. Jahrestagung der Vereinigung der Deutschen Ästhetisch-Plastischen Chirurgen (VDÄPC)
- Published
- 2011
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11. Der ideale Spalthauttransplantat-Entnahmestellenverband: Modifizierte Polyurethanfolie vs. Aquacel®
- Author
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Dornseifer, U., Gerstung, T., Lonic, D., Sturtz, G., and Ninkovic, M.
- Subjects
ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Einleitung: Die Behandlung von Spalthauttransplantat- Entnahmestellen (SH-ES) ist mit Dyskomfort für Patienten u. medizinisches Personal assoziiert. Die perforierte Polyurethanfolie in Kombination mit einem absorbierenden Verband (MOpS) als auch die Hydrofaser-Wundauflage Aquacel®(Convatec)[for full text, please go to the a.m. URL], DAV 2009; 27. Jahrestagung der deutschsprachigen Arbeitsgemeinschaft für Verbrennungsbehandlung
- Published
- 2009
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12. Die Behandlung von Knochendefekten am wachsenden kindlichen Schädel
- Author
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von Gernet, S, Lonic, D, Ninkovic, M, von Gernet, S, Lonic, D, and Ninkovic, M
- Published
- 2011
13. Der ideale Spalthauttransplantat-Entnahmestellenverband: Modifizierte Polyurethanfolie vs. Aquacel®
- Author
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Dornseifer, U, Gerstung, T, Lonic, D, Sturtz, G, Ninkovic, M, Dornseifer, U, Gerstung, T, Lonic, D, Sturtz, G, and Ninkovic, M
- Published
- 2009
14. Indikation und Häufigkeit der beidseitigen Brustrekonstruktion mit Eigengewebe
- Author
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Hoefter, E, primary, Lonic, D, additional, Holm-Mühlbauer, C, additional, Mayr-Brune, M, additional, and Ninkovic, M, additional
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- 2006
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15. Helium (Argon) Plasma coagulation in neurosurgery. Morphology of tissue damage and reparation
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Mennel, H.D., primary, Riegel, T., additional, Lonic, D., additional, and Bertalanffy, H., additional
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- 2002
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16. Septal Extension Graft in Cleft Rhinoplasty: Patients with Secondary Unilateral Cleft Lip Nasal Deformity.
- Author
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Saito T, Lonic D, Lo CC, Tu JC, Hattori Y, and Lo LJ
- Subjects
- Humans, Male, Female, Adult, Young Adult, Retrospective Studies, Nose abnormalities, Nose surgery, Treatment Outcome, Adolescent, Reoperation methods, Reoperation statistics & numerical data, Rhinoplasty methods, Cleft Lip surgery, Nasal Septum surgery, Nasal Septum abnormalities
- Abstract
Background: Tip refinement procedures are still controversial in secondary unilateral cleft rhinoplasty. The aim of this study was to assess whether the septal extension graft improved nasal and tip deformity and achieved a normal profile with clinical and three-dimensional morphometric analyses., Methods: A consecutive series of 194 skeletally mature patients with unilateral cleft were included and analyzed. All had undergone secondary open rhinoplasty, performed by a single surgeon, with the use of the septal extension graft between 2013 and 2021. Clinical data were collected, and three-dimensional morphometric measurements were performed. An age-, sex-, and ethnicity-matched normal group was included for comparisons., Results: The authors' standard procedures included open approach combining reverse-U incision, septal extension graft, dorsal augmentation, lip revision, and vermilion augmentation. The postoperative outcome showed significantly increased numerical values (nasal bridge length, nasal height, nasal tip projection, nasal dorsum angle, columellar angle, columellar-lobule angle, nostril height ratio, nasal surface area, nasal volume) and decreased numerical values (alar width, tip/middle deviation, nasal tip angle, labial-columellar angle) compared with the preoperative morphology. The postoperative measurement showed significantly higher numerical values (nasal protrusion, tip/middle deviation, nasal dorsum angle) and lower numerical values (columellar-lobule angle, nostril height ratio, alar width ratio) compared with the control group., Conclusions: This study revealed that the authors' secondary cleft rhinoplasty significantly improved the underprojected, up-rotated, deviated, and poorly defined tip and short nasal bridge deformities. The technique could result in the nose of the patients with cleft lip nasal deformity being closer to that of the normative profile., Clinical Question/level of Evidence: Therapeutic, IV., (Copyright © 2023 by the American Society of Plastic Surgeons.)
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- 2024
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17. Objectifying the Role of the Depressor Anguli Oris Muscle Using High-Resolution Ultrasound: A Prospective Study.
- Author
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Kehrer A, Ruewe M, Klebuc M, Platz Batista da Silva N, Lonic D, Heidkrueger P, Knoedler S, Jung EM, Prantl L, and Knoedler L
- Subjects
- Male, Humans, Female, Prospective Studies, Facial Muscles diagnostic imaging, Smiling physiology, Synkinesis, Facial Paralysis surgery
- Abstract
Background: In the setting of facial palsy, synkinesis of the depressor anguli oris (DAO) muscle is a common pathology, impairing dynamic and resting facial symmetry.In this prospective study, the authors used high-resolution ultrasound (HRUS) to evaluate the morphologic features of DAO and to quantify bilateral differences in DAO cross-sectional diameter (CSD) in individuals with unilateral synkinesis., Methods: From June of 2020 to May of 2021, 30 patients (19 women, 11 men) with clinically diagnosed unilateral synkinesis underwent evaluation with HRUS. DAO CSD was measured bilaterally, 1 cm inferior to the modiolus, in both the resting and smiling positions., Results: The Sunnybrook Facial Grading System Synkinesis Score was 6.20 ± 2.48 (range, 0 to 10). DAO CSD at rest measured 2.41 ± 0.67 mm (range, 1.40 to 4.00 mm) on the control side and 2.66 ± 0.98 mm (range, 1.60 to 5.10 mm) on the affected side. On the control side, DAO CSD was reduced by -0.19 ± 0.43 mm (range, -1.10 to 1.12 mm) during smiling. In contrast, the synkinetic DAO CSD increased by 0.64 ± 0.38 mm (range, 0.00 to 1.59 mm) ( P < 0.001) with animation. The pattern of increased CSD in synkinetic DAO muscles and decreased or unchanged CSD on the control side during smiling was identified in 70% of patients., Conclusions: HRUS demonstrates increased CSD in synkinetic DAO muscles during active smiling. The opposite is true for DAO muscles on the control side, which exhibit decreased CSD with animation. HRUS can be performed preoperatively to objectify DAO dysfunction and guide targeted therapy., Clinical Question/level of Evidence: Diagnostic, IV., (Copyright © 2023 by the American Society of Plastic Surgeons.)
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- 2023
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18. Three-Dimensional Analyses of Postoperative Effects of Surgically Assisted Rapid Palatal Expansion (SARPE) on the Soft Tissue of the Midface Region and the Upper Airway Space Using Stereophotogrammetry and Cone Beam Computed Tomography (CBCT).
- Author
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Heldmaier W, Lonic D, and Loeffelbein DJ
- Subjects
- Adult, Humans, Male, Female, Retrospective Studies, Maxilla surgery, Cone-Beam Computed Tomography methods, Photogrammetry, Palatal Expansion Technique, Spiral Cone-Beam Computed Tomography
- Abstract
Background: Surgically assisted rapid palatal expansion (SARPE) is an established method to treat transverse maxillary hypoplasia in skeletally mature adult patients. SARPE affects the surrounding soft tissue. In addition, effects on the airway and breathing have been described. Aim of this study was to assess the effects of SARPE on the nasal soft tissue and the upper airway by means of three-dimensional stereophotogrammetry and cone beam computed tomography (CBCT)., Methods: This retrospective study used preoperative and postoperative cone beam computed tomography (CBCT) scans and three-dimensional stereophotogrammetry. Ten skeletally adult patients (4 male, 6 female; mean age 27.68 years) with transverse maxillary hypoplasia were included. Patients had undergone SARPE procedure, performed by the same surgical team using the same technique. Nasal soft tissue changes were analyzed, using three-dimensional stereophotogrammetry records taken preoperatively (t0) and at the postoperative checkup appointment (t1). The upper airway was assessed using CBCT scans for surgical planning (t0) and the first scan taken after SARPE (t1)., Results: In stereophotogrammetry, it was shown that only a few soft tissue nasal parameters increased significantly and SARPE leads to mainly clinically irrelevant changes in nasal soft tissue. In CBCT, only a significant increase in nasopharyngeal airway volume was found., Discussion: Results were in alignment with literature. The effects of SARPE on the nasal soft tissue are mostly statistically insignificant and clinically irrelevant. Airway volume significantly increased in the nasopharyngeal area. Further research on SARPE effects should be conducted to reinforce SARPE as a treatment option for sleep apnea patients.
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- 2023
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19. Using High-Resolution Ultrasound to Assess Post-Facial Paralysis Synkinesis-Machine Settings and Technical Aspects for Facial Surgeons.
- Author
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Kehrer A, Ruewe M, Platz Batista da Silva N, Lonic D, Heidekrueger PI, Knoedler S, Jung EM, Prantl L, and Knoedler L
- Abstract
Background: Synkinesis of the facial musculature is a detrimental sequalae in post-paralytic facial palsy (PPFP) patients. Detailed knowledge on the technical requirements and device properties in a high-resolution ultrasound (HRUS) examination is mandatory for a reliable facial muscle assessment in PPFP patients. We therefore aimed to outline the key steps in a HRUS examination and extract an optimized workflow schema., Methods: From December 2020 to April 2021, 20 patients with unilateral synkinesis underwent HRUS. All HRUS examinations were performed by the first author using US devices with linear multifrequency transducers of 4-18 MHz, including a LOGIQ E9 and a LOGIQ S7 XDclear (GE Healthcare; Milwaukee, WI, USA), as well as Philips Affinity 50G (Philips Health Systems; Eindhoven, the Netherlands)., Results: Higher-frequency and multifrequency linear probes ≥15 MHz provided superior imaging qualities. The selection of the preset program Small Parts, Breast or Thyroid was linked with a more detailed contrast of the imaging morphology of facial tissue layers. Frequency (Frq) = 15 MHz, Gain (Gn) = 25-35 db, Depth (D) = 1-1.5 cm, and Focus (F) = 0.5 cm enhanced the image quality and assessability., Conclusions: An optimized HRUS examination protocol for quantitative and qualitative facial muscle assessments was proposed.
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- 2022
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20. Simultaneous Fat Injection for Nasal Contouring in Orthognathic Patients.
- Author
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Lonic D, Hsiao YC, Huang JJ, Chang CS, Chen JP, Heidekrueger PI, Kehrer A, Prantl L, Lo LJ, and Chen YR
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- Humans, Nose diagnostic imaging, Nose surgery, Prospective Studies, Retrospective Studies, Esthetics, Dental, Rhinoplasty methods
- Abstract
Background: Augmentation rhinoplasty with autologous fat grafting is a useful procedure to meet the demand for facial harmonization in the Asian population. We used this procedure during orthognathic surgery to address inadequate dorsum projection. This prospective study was conducted to determine the fat retention rate in patients undergoing simultaneous autologous fat injection augmentation rhinoplasty and orthognathic surgery., Methods: Nineteen patients were treated with simultaneous bimaxillary orthognathic surgery and autologous fat grafting of the nasal dorsum and tip. The paired t test was used to compare the nasal volumes before and at least 6 months after surgery measured by 3-dimensional computer tomography scans. All measurements were performed twice by the same evaluator at least 2 weeks apart for intrarater consistency., Results: Seventeen patients completed the study. The volume means before and after surgery were 22.3 ± 4.6 cm
3 and 23.3 ± 4.7 cm3 , respectively, with a mean difference of 1.0 ± 0.3 cm3 ( P < .001). The mean retention rate was calculated to be 50.5% ± 7.0% (range: 40.5%-64.7%). Intrarater consistency was high with a Cronbach α of .97 ( P < .001) and .98 ( P < .001), respectively., Conclusion: This prospective study provides objective graft retention measurements for fat injection augmentation rhinoplasty combined with orthognathic surgery. All patients were satisfied with the results and no complications or additional morbidity was noted in the postoperative course. We consider this procedure to be a safe, reliable, and powerful adjunct to improve the aesthetic results of orthognathic surgery.- Published
- 2022
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21. Technical Aspects of High-Resolution Color-Coded Duplex Sonography for the Design of Perforator Flaps.
- Author
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Kehrer A, Heidekrueger PI, Lonic D, Klein S, Anker A, Taeger CD, Biermann N, Jung EM, Prantl L, and da Silva NPB
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- Hemodynamics, Humans, Microvessels diagnostic imaging, Ultrasonography, Doppler, Color, Perforator Flap, Plastic Surgery Procedures
- Abstract
Background: Technical aspects are of utmost significance for an efficient execution in designing perforator flaps with high-resolution color-coded Duplex sonography (CCDS). The following study evaluates decisive factors for a successful microvessel examination conducted by the microsurgeon., Methods: Technical knowledge presented in this study was based on a series of more than 200 perforator flaps planned with CCDS. Flap reconstructions were performed at the University Hospital Regensburg, Germany, from July 2013 to January 2021. Standard high-resolution ultrasound (US) devices with linear multifrequency transducers of 4 to 18 MHz were used. Modes and device settings were evaluated regarding applicability by microsurgeons. Key steps for safe perforator identification and further optional steps for additional assessment should be discriminated., Results: Different US modes including brightness mode (B-mode), color flow (CF), power Doppler (PD), pulse wave (PW), and blood flow (B-Flow) were used. Transducers from 15 MHz and up were favorable to detect microvessels. Knobology of a standard US device regarding buttons, switches, and specific onscreen options with relevance for perforator mapping was subcategorized in four different groups. For qualitative and quantitative evaluation of microvessels, different US modes were tested with respect to their usefulness.Vital elements of the CCDS exam are disaggregated into three key steps for safe perforator identification and three optional steps for further perforator characterization. A standardized protocol for the CCDS exams was applied. Downregulation of pulse-repetition frequency/scale to adapt device sensitivity to slow-flow velocities represented the most important criterion to visualize microvessels.Qualitative microvessel evaluation was performed in B-mode, CCDS, PD mode, and B-Flow mode. Quantitative assessment was executed using PW-mode and CCDS measuring the microvessels' diameter (mm) and flow characteristics. Quantitative information may be obtained using PW-mode and the distance-measuring tool in CF-mode., Conclusion: Technical aspects with respect to proper device trimming and application decisively impact CCDS-guided perforator vessel identification and evaluation., Competing Interests: None declared., (Thieme. All rights reserved.)
- Published
- 2022
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22. NAM-help or burden? Intercultural evaluation of parental stress caused by nasoalveolar molding: a retrospective multi-center study.
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Roth M, Lonic D, Grill FD, Ritschl LM, Loeffelbein DJ, Wolff KD, Niu LS, Pai BC, Prantl L, Kehrer A, Heidekrüger PI, Rau A, and Lo LJ
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- Alveolar Process, Child, Humans, Infant, Nasoalveolar Molding, Nose, Parents, Retrospective Studies, Cleft Lip therapy, Cleft Palate surgery
- Abstract
Objectives: Nasoalveolar molding (NAM) was developed to facilitate easier treatment and better outcomes for cleft lip and palate (CLP) patients. The aim of this study was to investigate the parental burden and possible intercultural differences of this treatment modality, which is often argued to burden parents to an extraordinary amount., Materials and Methods: Standardized questionnaires (available in English, Mandarin, and German) with 15 non-specific and 14 NAM-specific items to be retrospectively answered by Likert scales by parents of unilateral CLP patients with completed NAM treatment., Results: The parents of 117 patients from two treatment centers in Taiwan and Germany were included. A very high level of overall satisfaction was found in both countries with significant intercultural differences in prenatal parent information, feeding problems, dealing with 3rd party's perception, and experienced personal effort., Conclusion: NAM is an effective treatment tool for children's CLP deformities and their caregivers in overcoming the feeling of helplessness. Intercultural differences may be due to infrastructural reasons, cultural attitudes and habits, or different public medical education., Clinical Relevance: In addition to facilitating easier surgical treatment, NAM can be seen as a powerful coping strategy for parents dealing with a CLP deformity of their child and does not seem to burden them extraordinarily., (© 2021. The Author(s).)
- Published
- 2021
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23. Do-It-Yourself Preoperative High-Resolution Ultrasound-Guided Flap Design of the Superficial Circumflex Iliac Artery Perforator Flap (SCIP).
- Author
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Schiltz D, Lenhard J, Klein S, Anker A, Lonic D, Heidekrueger PI, Prantl L, Jung EM, Platz Batista Da Silva N, and Kehrer A
- Abstract
The superficial circumflex iliac artery perforator (SCIP) flap is a well-documented, thin, free tissue flap with a minimal donor site morbidity, and has the potential to become the new method for resurfacing moderate-size skin defects. The aim of this study is to describe an easy, reliable, systematic, and standardized approach for preoperative SCIP flap design and perforator characterization, using color-coded duplex sonography (CCDS). A list of customized settings and a straightforward algorithm are presented, which are easily applied by an operator with minimal experience. Specific settings for SCIP flap perforator evaluation were investigated and tested on 12 patients. Deep and superficial superficial circumflex iliac artery (SCIA) branches, along with their corresponding perforators and cutaneous veins, were marked individually with a permanent marker and the anatomy was verified intraoperatively. From this, a simplified procedure for preoperative flap design of the SCIP flap was developed. Branches could be localized and evaluated in all patients. A preoperative structured procedure for ultrasonically guided flap design of the SCIP flap is described. A 100% correlation between the number and emergence points of the branches detected by preoperative CCDS mapping and the intraoperative anatomy was found.
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- 2021
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24. Diced Cartilage Rhinoplasty for Cleft Nose Deformities: Determining the Flexibility of the Cartilage Framework.
- Author
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Lonic D, Hsiao YC, Huang JJ, Chang CS, Chen JP, Denadai R, Bosselmann T, Kehrer A, Prantl L, Lo LJ, and Chen YR
- Subjects
- Cartilage transplantation, Humans, Nose surgery, Reproducibility of Results, Nose Diseases, Rhinoplasty
- Abstract
Background: The objective of this trial is to evaluate the flexibility of the cartilaginous component of the cleft nose after diced cartilage rhinoplasty by determining the degree of possible bending in relation to the vertical nasal dorsum axis and to compare with to a control group of the unaffected population., Patients and Methods: Fifteen cleft nose patients with diced cartilage rhinoplasty were included in this study, as well as a control group of 15 unaffected individuals. The angle of maximum nasal bending is measured between the basic and maximum bending axis and performed by the same rater twice at least 2 weeks apart to account for intrarater reliability. Study groups were compared with Fisher and independent t test., Results: The maximum bending to the left side was 16.10 ± 5.03 degrees for the study group and 23.95 ± 6.54 degrees for the control group (P = 0.001). The maximum bending to the right side were 16.54 ± 6.73 degrees for the study group and 23.00 ± 8.88 degrees for the control group (P = 0.034)., Conclusion: Diced cartilage graft injection for dorsal augmentation yields reproducible and esthetically pleasing outcomes with good flexibility and natural feel of the nasal tip. Although there is a significant difference compared with a nonaffected control group in maximum bending capacity, all patients in this study were satisfied with the results., Competing Interests: Conflicts of interest and sources of funding: This project is supported by Chang Gung Research Grant CMRPG5F0191. The authors declare no conflict of interest., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2021
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25. High-Resolution Ultrasound-Guided Perforator Mapping and Characterization by the Microsurgeon in Lower Limb Reconstruction.
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Kehrer A, Heidekrueger PI, Lonic D, Taeger CD, Klein S, Lamby P, Sachanadani NS, Jung EM, Prantl L, and Batista da Silva NP
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- Female, Humans, Male, Prospective Studies, Thigh diagnostic imaging, Thigh surgery, Ultrasonography, Interventional, Perforator Flap, Plastic Surgery Procedures
- Abstract
Background: Preoperative ultrasound (US)-guided perforator mapping has immensely simplified perforator flap planning. It may be executed by the microsurgeon. Device settings and selection of ultrasound modes are of utmost significance for detection of low-flow microvessels. The following study evaluates different US modes., Methods: A prospective complete data acquisition was performed from July 2018 to June 2019 in a subset of patients who underwent US-guided flap planning. Multifrequency linear transducers were used applying five US modes. Brightness (B)-mode, color flow (CF), power Doppler (PD), pulse wave (PW), and B-flow modes were evaluated regarding applicability by microsurgeons. Peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI) were chosen to evaluate flow characteristics. US results were correlated to intraoperative findings., Results: A total number of eight patients (six males and two females) undergoing anterolateral thigh (ALT) or superficial circumflex iliac artery perforator (SCIP) flap surgery received an extensive standardized US-guided perforator characterization. Qualitative evaluation was performed in B-mode, color-coded duplex sonography (CCDS), PD, and B-flow mode. Quantitative assessment was executed using PW-mode and CCDS measuring the microvessels' diameter (mm) and flow characteristics (PSV, EDV, and RI). CCDS provided a mean diameter of 1.93 mm (range: 1.2-2.8 ± 0.51), a mean systolic peak of 16.9 cm/s (range: 9.9-33.4 ± 7.79), and mean RI of 0.71 (range: 0.55-0.87 ± 0.09) for lower limb perforators. All perforators located with US were verified by intraoperative findings. An optimized, time-effective US mapping algorithm was derived. Qualitative parameters may be evaluated with B-mode, CF, or B-flow. Smallest microvessels may be assessed in PD-mode. Lowering pulse-repetition frequency (PRF)/scale is mandatory to image low-flow microvessels as perforators. Quantitative information may be obtained using PW-mode and the distance-measuring tool in CF-mode. Image and video materials are provided., Conclusion: CCDS proved to be a powerful tool for preoperative perforator characterization when using a structured approach and mapping algorithm. Different techniques may be applied for specific visualizations and performed by the microsurgeon., Competing Interests: None declared., (Thieme. All rights reserved.)
- Published
- 2021
- Full Text
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26. Bilateral Complete Cleft Lip Repair: A Step-by-Step Video Series.
- Author
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Denadai R, Pai BCJ, Sato N, Lonic D, Chou PY, and Lo LJ
- Subjects
- Cleft Lip complications, Humans, Infant, Nose surgery, Treatment Outcome, Cleft Lip surgery, Mouth Mucosa transplantation, Nose abnormalities, Rhinoplasty methods, Surgical Flaps transplantation
- Abstract
Surgeons-in-training learning how to perform cleft surgery should not only acquire a broad repertoire of technical details but also master the proper execution of techniques based on the modern principles of bilateral cleft lip repair with synchronous reconstruction of cleft nose deformity. This article describes a bilateral complete cleft lip repair by adopting these principles, plus a modified composition of mucosal flaps for the nasal floor and intraoral linings, including the prolabial mucosal flap, C-flap mucosal flap, inferior turbinate mucosal flap, and lateral nasal mucosal flap. The accompanying four-part video series presents the step-by-step approach for design and execution of this alternative technique.
- Published
- 2020
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27. Impact of Smoking Status in Free Deep Inferior Epigastric Artery Perforator Flap Breast Reconstruction: A Multicenter Study.
- Author
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Prantl L, Moellhoff N, Fritschen UV, Germann G, Giunta RE, Zeman F, Kehrer A, Lonic D, Broer PN, Ehrl D, and Heidekrueger PI
- Subjects
- Europe, Female, Humans, Retrospective Studies, Smoking, Breast Neoplasms surgery, Epigastric Arteries surgery, Mammaplasty, Perforator Flap
- Abstract
Background: Several patient-related factors have been identified with regard to the safety and efficacy of breast reconstructions. Using the largest database available in Europe, the presented study investigated the impact of cigarette smoking on deep inferior epigastric artery perforator (DIEP) free-flap breast reconstructions., Methods: In total, 3,926 female patients underwent 4,577 free DIEP-flap breast reconstructions after malignancies in 22 different German breast cancer centers. The cases were divided into two groups: nonsmokers (NS) and smokers (S). Impact of smoking on surgical complications, controlled for covariates, and cluster effects within the cancer centers were analyzed by using generalized linear mixed models., Results: Overall, there was no significant difference between the groups of patients regarding the rate of total flap loss. However, the rate of partial flap loss (0.9 vs. 3.2%, p < 0.001) and wound-healing disturbances requiring revision surgery (donor site: 1.5 vs. 4.0; recipient site: 1.3 vs. 3.6%, both p < 0.001) was significantly higher in smokers. Multivariable analysis identified smoking to be an independent risk factor for revision surgery ( p = 0.001) and partial flap loss ( p < 0.0001)., Conclusion: Our findings suggest that successful free tissue transfer can be achieved in smokers despite higher rates of partial flap losses and wound-healing disturbances. However, patients with a history of smoking requiring DIEP flap reconstruction should be critically evaluated preoperatively, informed in detail about the higher risk of complications and encouraged to quit smoking prior to surgery., Competing Interests: None declared., (Thieme. All rights reserved.)
- Published
- 2020
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28. Feasibility study of preoperative microvessel evaluation and characterization in perforator flaps using various modes of color-coded duplex sonography (CCDS).
- Author
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Kehrer A, Lonic D, Heidekrueger P, Bosselmann T, Taeger CD, Lamby P, Kehrer M, Jung EM, Prantl L, and Platz Batista da Silva N
- Subjects
- Adolescent, Adult, Aged, Feasibility Studies, Humans, Microvessels diagnostic imaging, Middle Aged, Prospective Studies, Ultrasonography, Doppler, Color, Young Adult, Perforator Flap, Plastic Surgery Procedures
- Abstract
Background: Color-coded duplex sonography (CCDS) is useful for perforator flap design showing the highest sensitivity in identifying microvessels. This prospective study evaluates the feasibility of different ultrasound (US) modes applied by the microsurgeon in daily practice suggesting quantifiable reference values., Methods: Twenty-four patients aged between 17 and 68 years (mean 43.3 ± 14.2 years) with 18 anterolateral thigh (ALT) and 6 superficial circumflex iliac artery (SCIP) flaps were included. Indications were traumatic (n = 12), infectious (n = 6), ischemic (n = 4), or tumor-associated defects (n = 2). Different US modes were evaluated regarding applicability using multifrequency linear probes (5-15 MHz). Vessels diameter, peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI) were measured. Preoperative results were correlated to intraoperative findings., Results: In the examined patient group with 24 perforator flaps a 100% correlation was seen when comparing perforators detected with CCDS/PD with intraoperative findings using optimized US settings. Sensitivity, PPV, and accuracy of CCDS were 100% respectively. Mean PSV of 16.99 ± 6.07 cm/s, mean EDV of 5.01 ± 1.84 cm/s and RI of 0.7 ± 0.07 were measured in microvessels (PW-mode). CCDS proved to be superior compared to PD in correct diameter assessment showing a mean diameter of 1.65 ± 0.45 mm, compared to PD-mode 1.31 ± 0.24 mm. Mean PSV and EDV were higher in ALT than in SCIP flaps, RI was slightly higher in SCIP flaps (p > .05). There were no significant differences in size of different flaps' perforators (p > .05)., Conclusion: CCDS represents a highly valuable tool in the daily practice of free flap reconstructions using optimized low flow US settings and multifrequency linear probes., (© 2020 The Authors. Microsurgery published by Wiley Periodicals LLC.)
- Published
- 2020
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29. Step-by-step guide to ultrasound-based design of alt flaps by the microsurgeon - Basic and advanced applications and device settings.
- Author
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Kehrer A, Sachanadani NS, da Silva NPB, Lonic D, Heidekrueger P, Taeger CD, Klein S, Jung EM, Prantl L, and Hong JP
- Subjects
- Humans, Patient Positioning, Plastic Surgery Procedures instrumentation, Plastic Surgery Procedures methods, Thigh diagnostic imaging, Free Tissue Flaps surgery, Perforator Flap surgery, Thigh surgery, Ultrasonography, Interventional methods
- Abstract
Background: The anterolateral thigh (ALT) perforator flap is a popular reconstructive tissue transfer. Consistent with the "hot/cold zone" concept for rapid dissection and thin flap harvest, reliable preoperative perforator mapping is mandatory. Color-coded duplex sonography (CCDS) has been shown to have the highest pooled sensitivity and positive predictive value to identify ALT perforating vessels. By reviewing this guide, the reader should learn: 1. Probe selection and basic/advanced device settings 2. Interpreting tissue morphology 3. Structured mapping approach 4. Pedicle position planning 5. Safe flap design 6. Assess subcutaneous course and flap's thickness for subfascial/epifascial/suprafascial harvest 7. Implement perforators identified into a tailor-made flap design including chimeric flaps., Methods: Experiences with ultrasound-guided flap design gained from 125 ALT perforator flap free tissue transfers performed in two reconstructive centers was the basis of our guide. Our structured method comprises standardized markings, patient positioning, and simple ergonomics. Basic and advanced CCDS settings, selection, and conventional probe guidance are outlined for the microsurgeon., Results: Linear multifrequency probes (6-15 MHz) were used. Best preset programs were breast, thyroid, and vascular. Favorable device properties were depth focused to 2-5 cm, pulse repetition frequency (PRF/Scale) set low to 0.5-1.5 kHz/3-10 cm/s, color gain high, and wall filter (WF) low/off (< 50 Hz). Additional parameters were discussed. A 100% concordance rate was seen comparing preoperative perforator visualization with CCDS and intraoperative findings. Detailed picture and video material were demonstrated., Conclusion: CCDS is a powerful tool for preoperative perforator mapping in perforator flaps such as the ALT., Competing Interests: Declaration of Competing Interest None., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
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30. Patient- and 3D morphometry-based nose outcomes after skeletofacial reconstruction.
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Denadai R, Chou PY, Seo HJ, Lonic D, Lin HH, Pai BCJ, and Lo LJ
- Subjects
- Adult, Female, Humans, Imaging, Three-Dimensional, Male, Surgery, Computer-Assisted, Young Adult, Nose surgery, Orthognathic Surgical Procedures methods, Plastic Surgery Procedures methods
- Abstract
Patient satisfaction with the shape and appearance of their nose after orthognathic surgery-based skeletofacial reconstruction is an important, but often overlooked, outcome. We assessed the nose-related outcomes through a recently developed patient-reported outcome instrument and a widely adopted 3D computer-based objective outcome instrument, to verify any correlation in the results produced by these tools. We collected FACE-Q nose appearance reports (2 scales) and 3D nasal morphometry (10 parameters) from patients with class III skeletal pattern and congenital cleft lip palate deformity (n = 23) or developmental dentofacial deformity (n = 23) after (>12 months) skeletofacial reconstruction. The cleft and dentofacial cohorts demonstrated significantly (p < 0.001) poorer satisfaction scores with regard to the FACE-Q nostrils scale than the normal age-, gender-, and ethnicity-matched subjects (n = 107), without any significant difference in FACE-Q nose scale. The cleft cohort had significantly (p < 0.001) smaller nasal length, nasal tip projection, and columellar angle and greater nasal protrusion, alar width, and columellar-labial angle values than the dentofacial and normal cohorts; however, there were no significant differences between the dentofacial versus normal cohorts. The FACE-Q nose and nostrils scales were significantly (p < 0.001; r = -0.26-0.27) correlated to the results of the 3D morphometric analysis, with regard to nasal length, alar width, columella angle, and columellar-labial angle parameters. This study revealed differences in satisfaction with the appearance of the nose according to the type of underlying deformity, and demonstrated a significant correlation (low correlation coefficients) between the patient-reports and 3D image-based outcome measure tools, which has implications for multidisciplinary-centered research, auditing, and clinical care.
- Published
- 2020
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31. Is major burn injury associated with coagulopathy? The value of thrombelastometry in the detection of coagulopathy in major burn injury: A prospective observational study.
- Author
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Lonic D, Heidekrueger PI, Bosselmann T, Niclas Broer P, Gertler R, Wolfgang Martin K, Prantl L, Ninkovic M, Giunta R, and Ehrl D
- Subjects
- Adult, Female, Humans, Male, Prospective Studies, Blood Coagulation Disorders diagnosis, Burns etiology, Thrombelastography methods
- Abstract
Backgrund: The coagulation status of burn patients is generally impaired and is a major factor of the deteriorating burn patients' overall situation. In trauma and other patient groups, the differential diagnosis of coagulation impairment has been largely improved by the use of rotational thromboelastometry (ROTEM®). The aim of this prospective observational study was the differentiated observation of coagulopathy in severely burned patients using standard parameters and ROTEM® thrombelastometry during the relevant stages of burn disease., Patients and Methods: Twelve patients that sustained at least 20% third degree burns of total body surface area (TBSA) were included in the study. Standard and ROTEM® coagulation analyses were performed on admission and then twice daily during the first 14 days following burn trauma., Results: Although the initial assessment of DIC was similar for both standard labs and ROTEM® measurements, more patients were detected to be in a state of worsening coagulation status for a longer time in ROTEM® than in standard measurements. In addition, one patient was rated in to be in decompensated DIC for 3 days according to ROTEM® measurements, while no patient was rated to be in a decompensated DIC based on standard parameters., Conclusion: This study points towards a more complex picture and higher occurrence of DIC in burn patients when thrombelastometric measurements like ROTEM® are taken into account in addition to standard coagulation parameters.
- Published
- 2020
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32. Early fasciotomies and plastic-surgical reconstruction may enhance preservation of functional extremity length in purpura fulminans.
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Koch C, Taeger C, Geis S, Lonic D, Heidekrueger P, Dolderer J, Bitzinger D, Hirche C, Prantl L, and Kehrer A
- Subjects
- Adolescent, Adult, Aged, Female, Humans, Infant, Male, Retrospective Studies, Treatment Outcome, Fasciotomy methods, Purpura Fulminans surgery, Plastic Surgery Procedures methods
- Abstract
Background: Purpura fulminans (PF) is a distinct form of rare meningococcal septicaemia mostly in childhood which is characterized by high lethality, extensive necroses and mutilations of extremities. Other ethiologies are idiopathic forms or purpura neonatorum, which is marked by deficiency of Protein-C. PF is caused by micro-embolism of the vascular system, followed by quickly spreading necroses of skin and different organs.Modern concepts of intensive care treatment of the acute phase of this disease and early surgical intervention lead to a rising number of surviving patients requiring limb salvage.Aim of this study is to evaluate a possible lower morbidity and the grade of lower loss of function because of early surgical intervention., Patients and Methods: Between the years 1998 and 2017 eight cases of PF at two large centers for critical wound care, the department of plastic-, hand- and reconstructive surgery of the university hospital of Regensburg and the department of plastic-, hand- and reconstructive surgery of the BG-clinic Ludwigshafen were included into our study.We retrospectively examined patients with PF who were stabilized by intensive care medicine and received surgical interventions. After survival of the acute phase (10 days), patients received plastic surgical reconstructions., Results: A total number of eight patients could be included into our study. All patients survived the initial phase (10 days). All patients required plastic-surgical interventions to address extensive skin and soft tissue defects. Flap operations were judged necessary in five cases. Hereby four defects could be reconstructed by free tissue transfer, one with a local flap. Flap survival was 100 percent. One flap required revision of the arterial anastomosis of the flap arteria. Another flap got partial necrosis. One patient died due to multiorgan failure.Early debridements with consequent fasciotomies and secondary plastic-surgical reconstruction achieved good functional results. Limb salvage was accomplished in three patients. One patient died due to fulminant progress of the disease., Conclusion: Management of PF requires a multidisciplinary approach and close communication between the different subspecialties. Early debridements with consequent fasciotomies showed good results in salvaging subfascial muscle tissue in the extremities with satisfying functional results. Early surgical intervention is an important factor for improved limb salvage and survival.
- Published
- 2020
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33. An Analysis of Aesthetic Refinements in 120 Secondary Cleft Rhinoplasties.
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Kehrer A, Nijhuis THJ, Lonic D, Heidekrueger PI, Kehrer M, Taeger CD, Willemsen S, Prantl L, and van der Meulen JJJNM
- Subjects
- Adolescent, Adult, Cleft Lip diagnosis, Cohort Studies, Esthetics, Female, Follow-Up Studies, Humans, Male, Nasal Cartilages surgery, Netherlands, Photometry methods, Plastic Surgery Procedures adverse effects, Retrospective Studies, Risk Assessment, Treatment Outcome, Young Adult, Cleft Lip surgery, Plastic Surgery Procedures methods, Reoperation methods, Rhinoplasty methods, Surgical Flaps transplantation
- Abstract
Background: Secondary cleft nose rhinoplasty remains a challenging procedure. Cartilage memory and scar contraction are problematic factors. The need for more detailed procedures for secondary reconstruction in this patient population has arisen. Contemporary refinements demonstrate a highly structured approach. We conducted a retrospective study evaluating the aesthetic results of cleft patients who underwent secondary rhinoplasty., Methods: In a retrospective study, a photometric analysis of cleft patients operated in the period 2003-2011 was conducted. Reconstructive methods were documented. Pre- and postoperative photographs of cleft rhinoplasty patients were evaluated using a standardized protocol. Nostril width ratio, columellar angle, tip projection ratio, and nasolabial angle served as objective instruments. The Unilateral Cleft Lip Surgical Outcomes Evaluation score was chosen for external photometric rating and rated blindly by 2 external individual plastic surgeons as independent nonbiased reviewers. The interrater and intrarater reliabilities were calculated using the Cohen kappa coefficient (κ)., Results: A total of 120 secondary rhinoplasties in 85 uni- and bilateral cleft patients could be included. Mean follow-up was 20 months. A total of 60 (71%) patients needed additional bone grafting (chin/pelvis), and 23 (27%) patients a LeFort I osteotomy. In one third of the secondary rhinoplasties, a medial and/or lateral osteotomy was performed (34%). In one fourth (24%), an external septoplasty was considered necessary. In 55% (47 patients) of the cases, a columellar strut was used. Excluding bone grafts, a total of 173 other grafts (mean of 2 grafts/patient) were applied. Postoperative measurements for nostril width ratio and columellar angle were statistically significant. A structured approach with contemporary refinements is described in detail. Intra- and interrater reliabilities for photometric assessment according to the Unilateral Cleft Lip Surgical Outcomes Evaluation score are shown., Conclusions: A structured approach for secondary cleft rhinoplasty yields satisfying, reproducible, and stable results.
- Published
- 2019
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34. Evaluation of a portable low-budget three-dimensional stereophotogrammetry system for nasal analysis.
- Author
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Ritschl LM, Grill FD, Mittermeier F, Lonic D, Wolff KD, Roth M, and Loeffelbein DJ
- Subjects
- Anatomic Landmarks, Humans, Reproducibility of Results, Imaging, Three-Dimensional instrumentation, Nose anatomy & histology, Nose diagnostic imaging, Photogrammetry instrumentation, Point-of-Care Systems
- Abstract
Background: Three-dimensional (3D) photogrammetry has reached high standards and accuracy but is mainly conducted with stationary and expensive systems. The purpose of this study was to evaluate the accuracy of a low-budget portable system with special regard to the gracile and challenging nasal region., Material and Methods: 3D models of the perinasal area were acquired by impression-taking and the scanning of the generated plaster models (3Shape D500) or with a portable low-budget 3D stereophotogrammetry (FUEL3D
® SCANIFY® ) system. Four examiners analysed defined landmarks of the generated Standard Tessellation Language files with regard to accuracy and interobserver reliability by using 3dMDvultus™ software. A semi-automatic 3D best-fit analysis of both models was performed by using Geomagic® and the Root Mean Squared (RMS) errors were calculated., Results: 41 volunteers were included, with 22 perinasal and perioral landmarks, 15 3D distances and eight 3D angles being analysed per data set. In a point-based analysis the mean spreads were partially smaller in the plaster model scans. Most measurements showed very high (>0.8) to excellent (>0.9) intraclass correlation coefficients, the lowest being found for columella length (0.686) and left nostril width (0.636). Overall, the mean RMS error between the superimposed surfaces was 0.89 ± 0.22 mm in the best-fit analysis., Conclusions: The corresponding software program was operator-friendly. The findings indicate that the analysed, affordable and portable system is a feasible solution for 3D image acquisition with comparable accuracy reported in the literature. Further studies will analyse the feasibility in neonates., (Copyright © 2018 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.)- Published
- 2018
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35. 3D printing in orthognathic surgery - A literature review.
- Author
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Lin HH, Lonic D, and Lo LJ
- Subjects
- Humans, Patient Satisfaction, Surgery, Computer-Assisted, Orthognathic Surgery trends, Orthognathic Surgical Procedures instrumentation, Printing, Three-Dimensional
- Abstract
With the recent advances in three-dimensional (3D) imaging, computer-assisted surgical planning and simulation are now regularly used for analysis of craniofacial structures and improved prediction of surgical outcomes in orthognathic surgery. A variety of patient-specific surgical guides and devices have been designed and manufactured using 3D printing technology, which rapidly gained widespread popularity to improve the outcomes. The article presents an overview of 3D printing technology for state-of-the-art application in orthognathic surgery and discusses the impacts on treatment feasibility and patient outcome. The current available literature regarding the use of 3D printing methods in orthognathic surgery including 3D computer-aided design/computer-aided manufacturing, rapid prototyping, additive manufacturing, 3D printing, 3D printed models, surgical occlusal splints, custom-made guides, templates and fixation plates is reviewed. A Medline, PubMed, ProQuest and ScienceDirect search was performed to find relevant articles over the past 10 years. A total of 318 articles were found, out of which 69 were publications addressing the topic of this study. An additional 9 hand-searched articles were added. From the review, we can conclude that the use of 3D printing methods in orthognathic surgery provide the benefit of optimal functional and aesthetic results, patient satisfaction, and precise translation of the treatment plan., (Copyright © 2018. Published by Elsevier B.V.)
- Published
- 2018
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36. Primary Repair in Patients With Unilateral Complete Cleft of Lip and Primary Palate: Assessment of Outcomes.
- Author
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Chang SY, Lonic D, Pai BC, and Lo LJ
- Subjects
- Cleft Lip diagnosis, Cleft Lip epidemiology, Cleft Palate epidemiology, Cohort Studies, Esthetics, Female, Humans, Infant, Lip surgery, Male, Palate surgery, Quality of Life, Retrospective Studies, Risk Assessment, Taiwan, Treatment Outcome, Abnormalities, Multiple surgery, Cleft Lip surgery, Cleft Palate surgery, Plastic Surgery Procedures methods, Recovery of Function physiology
- Abstract
Objective: Asymmetry of median facial structures is a major concern for patients with unilateral cleft lip and palate, and the principal goal of its treatment is to restore symmetry. Unilateral complete cleft of lip and primary palate (UCCLPP) is an uncommon subgroup and rarely reported. Patients with UCCLPP have protruding and deviating premaxilla, rendering a primary repair difficult. This study evaluated consecutive patients with UCCLPP and presented their treatment outcome., Methods: We assessed 36 patients with UCCLPP and collected clinical information. Surgical repair was performed at 3 months of age by using a modified rotation-advancement method and primary nasal reconstruction. A single surgeon performed all surgical procedures. A postoperative nasal stent was used for 6 months. Follow-up standardized photographs were collected. Landmarks were identified, and nose and lip dimensions measured. The ratios of the corresponding parameters (cleft vs noncleft side) were obtained for evaluating nose and lip symmetry., Results: No surgical complication was noted in any patient. The overall lip and nose outcome after the primary repair were adequate, and all ratios were close to 1. The nostril width was slightly wider on the cleft side, but the alar width and height were acceptable. The lip heights were balanced between the 2 sides. Patients who received presurgical nasoalveolar molding did not show more favorable lip and nose dimensions, except for the medial philtral height., Conclusion: Even in the presence of protruding and deviating premaxilla, our patients with UCCLPP obtained adequate lip and nose outcome after undergoing primary lip repair and nasal reconstruction.
- Published
- 2018
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37. Nasal Duplication Combined with Cleft Lip and Palate: Surgical Correction and Long-Term Follow-Up.
- Author
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Long K, Yamaguchi K, Lonic D, Long V, Chhoeurn V, and Lo LJ
- Abstract
Background: Diprosopus dirrhinus, or nasal duplication, is a rare entity of partial craniofacial duplication., Methods: The case we present is the first report of diprosopus dirrhinus associated with complete cleft lip and palate. The baby was born in Cambodia at full term by normal vaginal delivery with no significant perinatal and family history. Physical examination revealed significant facial deformity due to the duplicated nose and the left complete cleft lip/palate on the right subset., Results: There were 4 nostrils; both medial apertures including the cleft site were found to be 10-15 mm deep cul-de-sac structures without communication to the nasopharynx. The upper third of the face was notable for hypertelorism with a duplication of the soft-tissue nasion and glabella. Between the 2 nasal dorsums, there was a small cutaneous depression with a lacrimal fistula in the midline. Surgical treatment included the first stage of primary lip and nose repair and the second stage of palatoplasty., Conclusions: The patient was followed up at the age of 10 years showing satisfactory results for both aesthetic and functional aspects. Further management in the future will be required for the hypertelorism and nasal deformity.
- Published
- 2017
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38. Reinforcing the Mucoperiosteal Pocket with the Scarpa Fascia Graft in Secondary Alveolar Bone Grafting: A Retrospective Controlled Outcome Study.
- Author
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Lonic D, Yamaguchi K, Chien-Jung Pai B, and Lo LJ
- Subjects
- Child, Female, Humans, Male, Retrospective Studies, Treatment Outcome, Alveolar Bone Grafting methods, Cleft Lip surgery, Cleft Palate surgery, Fascia transplantation, Plastic Surgery Procedures methods, Surgical Flaps
- Abstract
Background: Secondary alveolar bone grafting is the gold standard for the treatment of alveolar clefts in cleft lip and palate patients. The authors present a modified method using a Scarpa fascia graft that is placed deep into the mucoperiosteal pocket for watertight sealing of the bone graft chamber and limiting the graft position to the alveolar region for bony stability and tooth support. The outcome was assessed for clinical success in terms of bone graft stability and infection rate., Methods: Seventy-four unilateral complete cleft lip and palate patients were enrolled in this retrospective study consisting of equal-size Scarpa fascia and control groups of consecutive unilateral complete cleft lip and palate patients undergoing secondary alveolar bone grafting. Occlusal radiographs of the alveolar cleft taken at least 1 year postoperatively were evaluated for Spearman correlated Bergland and Witherow scales. Statistical evaluation was conducted using t test, chi-square test, and odds ratio., Results: The clinical success rate (Bergland types I and II) of the Scarpa fascia procedure was significantly higher (67.6 versus 94.6 percent, respectively), with a significantly lower infection rate (16.2 versus 2.7 percent, respectively) and a high correlation of Bergland and Witherow scales (0.964; p < 0.001). There was no wound dehiscence, fistula, bone graft exposure, or additional donor-site morbidity in the Scarpa fascia group., Conclusion: The authors' new method of alveolar bone grafting with the Scarpa fascia graft is safe and effective, and has one of the highest documented success rates., Clinical Question/level of Evidence: Therapeutic, III.
- Published
- 2017
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39. An integrated surgical protocol for adult patients with hemifacial microsomia: Methods and outcome.
- Author
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Yamaguchi K, Lonic D, Ko EW, and Lo LJ
- Subjects
- Adolescent, Adult, Female, Humans, Male, Retrospective Studies, Treatment Outcome, Young Adult, Goldenhar Syndrome surgery, Orthognathic Surgery methods
- Abstract
Background: Hemifacial microsomia (HFM) features hypoplasia and asymmetry in skeletal as well as soft tissue, and correction of the deformity is difficult in terms of aesthetic outcome. The purpose of this study is to examine the validity of an integrated treatment protocol for correction of this facial deformity., Patients and Methods: A retrospective study was performed on adult HFM patients who received two-jaw orthognathic surgery combined with facial contouring procedures in the first stage, and fat injection for the residual facial deficiency in the second stage. Inclusion criteria were patients treated by the same surgeon and follow-up at least 6 months. The demographic, perioperative, and follow-up data were collected. We defined a facial surface area discrepancy index (FDI) for objective assessment of the symmetry between the affected and non-affected side, and utilized visual analogue scale (VAS) for subjective evaluation of facial asymmetry before and after surgical treatment., Results: A total of 14 patients were included. The mean age at orthognathic surgery was 21.7 years. Four patients were categorized as Pruzansky-Kaban type I, while the remaining 10 patients were type II (7 patients type IIA, 3 patients type IIB). Fat injection as a secondary procedure was performed in eleven cases (79%). The mean pre- and postoperative FDI was 87.6±6.3 and 95.4±5.2 with a significant advance for symmetry (p < 0.001). The pre- and postoperative VAS for asymmetry was 7.2±1.7 and 3.8±2.4 respectively, with a significant improvement (p = 0.002)., Conclusion: Our integrated approach using orthognathic surgery, facial contouring surgery and subsequent fat injection is satisfactory and obtain significant improvement of the facial deformity considering the complexity of HFM.
- Published
- 2017
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40. Selection of a horizontal reference plane in 3D evaluation: Identifying facial asymmetry and occlusal cant in orthognathic surgery planning.
- Author
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Lonic D, Sundoro A, Lin HH, Lin PJ, and Lo LJ
- Subjects
- Adolescent, Adult, Area Under Curve, Cephalometry, Cone-Beam Computed Tomography, Female, Humans, Male, ROC Curve, Young Adult, Facial Asymmetry, Imaging, Three-Dimensional methods, Orthognathic Surgery methods
- Abstract
Facial asymmetry and dental occlusal cant have been detected in two-dimensional cephalometry using different horizontal reference lines, but equivalent 3-dimensional (3D) reference planes have not been thoroughly investigated. In this study, 3D cone-beam computed tomography scans of 83 consecutive patients were evaluated using a standardized 3D frame and three horizontal reference planes, Supraorbitale (Sor), Frontozygomatic (Z), and Frankfurt horizontal (FH) for cant detection. Canting was defined as a vertical difference between left and right sides of 2 mm or more, and in at least two investigated planes. Concordance for negative canting was found in 38 patients, and for positive canting in 22 patients. Discordance in cant detection was found in 23 patients (28%). 29 patients were found to have canting in at least 2 planes. The FH plane was discordant to the other two planes in 4 patients, the Sor plane in 7 patients and the Z plane in 12 patients. Youden's index showed the highest performance for FH (0.878), followed by Sor (0.823) and Z plane (0.762). This study revealed that the FH plane was the best method for cant detection in 3D imaging. The FH plane and Sor plane can be combined if orbital asymmetry is suspected.
- Published
- 2017
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41. A Modified Technique of Mandibular Ramus Sagittal Split Osteotomy for Prevention of Inferior Alveolar Nerve Injury: A Prospective Cohort Study and Outcome Assessment.
- Author
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Chortrakarnkij P, Lonic D, Lin HH, Yamaguchi K, Kim SG, and Lo LJ
- Subjects
- Adolescent, Adult, Female, Humans, Male, Outcome and Process Assessment, Health Care, Prospective Studies, Taiwan, Mandibular Nerve, Osteotomy, Sagittal Split Ramus methods, Postoperative Complications prevention & control, Trigeminal Nerve Injuries prevention & control
- Abstract
Background: Postoperative functional impairment of the inferior alveolar nerve (IAN) has been a common and well-recognized complication. Our study introduced a modified Obwegeser-Dal Pont bilateral sagittal split osteotomy (BSSO) technique and evaluated the subsequent incidence of postoperative neurosensory disturbance of IAN., Methods: In this prospective cohort study, 57 patients receiving our modified BSSO during orthognathic surgery were enrolled. The technique contained opening the 2 ramus cortices and inserting the osteotome bypassing the IAN to avoid nerve injury. A 5-point scale self-assessment questionnaire was used to evaluate IAN neurosensory disturbance one week, six months and 12 months postoperatively. Differences between groups were analyzed using χ test for categorical and Wilcoxon signed-rank test for pairwise categorical data., Results: Complete ramus splitting could be achieved in 109 (95.6%) sides. Lower lip or chin neurosensory disturbances presented in 72 (63.2%) sides 1 week postoperatively and gradually reduced to 9 (7.9%), and 4 (3.5%) at postoperative months 6 and 12, respectively., Conclusions: This BSSO technique could be safely performed with low rates of IAN exposure and injury and a low incidence of persistent neurosensory disturbance in 3.5% of patients 12 months postoperatively.
- Published
- 2017
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42. Establishment of a Reliable Horizontal Reference Plane for 3-Dimensional Facial Soft Tissue Evaluation Before and After Orthognathic Surgery.
- Author
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Chortrakarnkij P, Lonic D, Lin HH, and Lo LJ
- Subjects
- Adolescent, Adult, Anatomic Landmarks, Cone-Beam Computed Tomography, Female, Humans, Imaging, Three-Dimensional, Male, Photogrammetry, Reference Values, Reproducibility of Results, Face anatomy & histology, Orthognathic Surgical Procedures
- Abstract
Background: This study aims to demonstrate the reliability of our proposed facial reference system in the horizontal axis using 3-dimensional photogrammetry and to find a correlation between this plane and the Frankfurt horizontal (FH) plane., Methods: Forty-one patients were enrolled. Three-dimensional facial images were taken before and 6 months after orthognathic surgery. Superimposition was carried out, and differences in landmark position were evaluated. Two constant landmarks were selected to construct a reference system within a standardized reference frame. Cone-beam computed tomography and 3-dimensional facial images were superimposed. Two reference lines were identified, and the angle between these lines was calculated., Results: For landmark reliability, 5 landmarks [gnathion, nasion, exocanthion (Ex), endocanthion, and tragion (T)] were constant. Two landmarks (Ex and T) were selected to construct a reference system within a standardized reference frame. For angular measurement, the mean angle between this reference plane and the skeletal FH plane was 17.6 ± 2.0 degrees. There was no statistical difference between sex, side, and preoperative/postoperative timing of photography., Conclusions: Our proposed reference plane is constructed from reliable facial Ex and T landmarks. This plane is consistent and crosses the FH plane at 17.6 degrees.
- Published
- 2017
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43. Correction of Facial Deformity in Sturge-Weber Syndrome.
- Author
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Yamaguchi K, Lonic D, Chen C, and Lo LJ
- Abstract
Background: Although previous studies have reported soft-tissue management in surgical treatment of Sturge-Weber syndrome (SWS), there are few reports describing facial bone surgery in this patient group. The purpose of this study is to examine the validity of our multidisciplinary algorithm for correcting facial deformities associated with SWS. To the best of our knowledge, this is the first study on orthognathic surgery for SWS patients., Methods: A retrospective chart review included 2 SWS patients who completed the surgical treatment algorithm. Radiographic and clinical data were recorded, and a treatment algorithm was derived., Results: According to the Roach classification, the first patient was classified as type I presenting with both facial and leptomeningeal vascular anomalies without glaucoma and the second patient as type II presenting only with a hemifacial capillary malformation. Considering positive findings in seizure history and intracranial vascular anomalies in the first case, the anesthetic management was modified to omit hypotensive anesthesia because of the potential risk of intracranial pressure elevation. Primarily, both patients underwent 2-jaw orthognathic surgery and facial bone contouring including genioplasty, zygomatic reduction, buccal fat pad removal, and masseter reduction without major complications. In the second step, the volume and distribution of facial soft tissues were altered by surgical resection and reposition. Both patients were satisfied with the surgical result., Conclusions: Our multidisciplinary algorithm can systematically detect potential risk factors. Correction of the asymmetric face by successive bone and soft-tissue surgery enables the patients to reduce their psychosocial burden and increase their quality of life., Competing Interests: The authors have no financial interest to declare in relation to the content of this article. The Article Processing Charge was paid by the authors.
- Published
- 2016
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44. A Treatment Protocol for Velopharyngeal Insufficiency and the Outcome.
- Author
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Yamaguchi K, Lonic D, Lee CH, Wang SH, Yun C, and Lo LJ
- Subjects
- Child, Child, Preschool, Clinical Protocols, Follow-Up Studies, Humans, Incidence, Postoperative Complications epidemiology, Retrospective Studies, Taiwan epidemiology, Treatment Outcome, Velopharyngeal Insufficiency physiopathology, Algorithms, Otorhinolaryngologic Surgical Procedures methods, Palate, Soft surgery, Pharynx surgery, Plastic Surgery Procedures methods, Speech physiology, Surgical Flaps, Velopharyngeal Insufficiency surgery
- Abstract
Background: A simple algorithm is applied to treat velopharyngeal insufficiency. The purpose of this study was to assess its success rate and complications., Methods: The diagnosis includes speech perceptual assessment and nasopharyngoscopy, focusing on velopharyngeal closure ratio. The treatment is composed of a double-opposing Z-plasty for marginal velopharyngeal insufficiency or a pharyngeal flap for moderate to severe velopharyngeal insufficiency. A retrospective chart review was conducted for 84 consecutive nonsyndromic postpalatoplasty patients undergoing velopharyngeal insufficiency surgery from August of 2007 to December of 2014. The demographic, perioperative, and follow-up data were collected. Statistical analyses were performed., Results: Mean age at velopharyngeal insufficiency surgery was 7.0 years. The overall improvement rate for patients was 86.9 percent. Nine patients in the double-opposing Z-plasty group and two patients in the pharyngeal flap group were refractory to velopharyngeal insufficiency surgery. The improvement rates for each surgical group were 80.4 percent for the double-opposing Z-plasty group and 94.7 percent for the pharyngeal flap group. There were no significant differences in postoperative velopharyngeal function between the coronal and noncoronal groups. Airway-associated complications were observed in nine patients (10.7 percent). The complications in the double-opposing Z-plasty group were observed in two patients (4.3 percent), and none of the patients presented obstructive sleep apnea. Seven patients (18.4 percent) in the pharyngeal flap group showed postoperative snoring, and one (2.6 percent) of them presented with obstructive sleep apnea., Conclusion: The authors' algorithm is a simple patient- and surgeon-friendly strategy to obtain satisfactory improvement of velopharyngeal function for velopharyngeal insufficiency patients, with a low risk of airway complications., Clinical Question/level of Evidence: Therapeutic, IV.
- Published
- 2016
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45. Modified Furlow Palatoplasty Using Small Double-Opposing Z-Plasty: Surgical Technique and Outcome.
- Author
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Yamaguchi K, Lonic D, Lee CH, Yun C, and Lo LJ
- Subjects
- Child, Preschool, Female, Follow-Up Studies, Humans, Infant, Male, Postoperative Complications surgery, Reoperation, Retrospective Studies, Cleft Palate surgery, Composite Tissue Allografts surgery, Palate surgery, Postoperative Complications etiology, Suture Techniques
- Abstract
Background: A smaller Z-plasty is applied in a modified Furlow palatoplasty. The purpose of this study was to assess its surgical and functional outcome., Methods: The surgical technique included mucoperiosteal flap elevation in the hard palate, complete pedicle dissection and release, double-opposing Z-plasty using 5-mm limbs and muscle dissection in the soft palate, and the buccal fat pad covering lateral relaxing wounds. A retrospective chart review was conducted for 231 consecutive nonsyndromic patients undergoing modified palatoplasty from May of 2007 to December of 2014. The demographic, postoperative, and follow-up data were collected. Statistical analyses were performed., Results: Average age at palatoplasty was 8.3 months. The overall oronasal fistula rate was 0.4 percent; oronasal fistula occurred in only one case with bilateral cleft. Other complications included postoperative bleeding in two cases (0.8 percent), postoperative airway obstruction in one case (0.4 percent), obstructive sleep apnea in one case (0.4 percent), stitch abscess in one case (0.4 percent), and distal uvula dehiscence in two cases (0.8 percent). One hundred twenty-seven patients had full speech evaluation, and seven (5.5 percent) were diagnosed with velopharyngeal insufficiency requiring surgical correction., Conclusion: This modified palatoplasty using a small double-opposing Z-plasty provided adequate cleft palate closure, with a low fistula rate and satisfactory speech outcome., Clinical Question/level of Evidence: Therapeutic, IV.
- Published
- 2016
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46. Three-dimensional simulation of orthognathic surgery-surgeon's perspective.
- Author
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Lonic D and Lo LJ
- Subjects
- Computer-Aided Design, Cone-Beam Computed Tomography, Humans, Orthognathic Surgery methods, Patient Care Planning, User-Computer Interface, Imaging, Three-Dimensional methods, Orthognathic Surgical Procedures instrumentation, Surgery, Computer-Assisted methods
- Published
- 2016
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47. Complications following orthognathic surgery for patients with cleft lip/palate: A systematic review.
- Author
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Yamaguchi K, Lonic D, and Lo LJ
- Subjects
- Humans, Orthognathic Surgery methods, Cleft Lip surgery, Cleft Palate surgery, Maxillary Osteotomy adverse effects, Postoperative Complications epidemiology, Reoperation statistics & numerical data
- Abstract
Background/purpose: The purpose of this systematic review is to update the available data for complications following orthognathic surgery in cleft lip and/or palate patients., Methods: Three electronic databases (Medline, Embase, and Cochrane) were searched for publications from 1990 to 2014., Results: A total of 26 articles were selected including 1003 patients (male: 391, female: 353, 259: not mentioned) who underwent maxillary osteotomies for cleft lip/palate. Mean age at surgery was 19.3 years (range: 8.5-60 years). Overall perioperative complications were reported in 126 cases (12.76%). The most common complication was closure failure of pre-existing palatal fistula (28.57%), followed by velopharyngeal impairment (16.79%), closure failure of pre-existing alveolar fistula (10.74%), gingival recession (4.55%), and failure of premaxilla stabilization in bilateral cases (4.55%). Severe vascular complications included one arteriovenous fistula (0.10%), one maxillary aneurysm (0.10%), and one cavernous sinus thrombosis (0.10%). Mean horizontal relapse rate was 17.9% (range: -20.0% to 37.2%), and mean vertical relapse rate was 35.4% (range: -25.9% to 162.5%). Reoperation rate was 12.2% (range: 0.0-64.0%). Prospective studies or randomized trials were rare., Conclusion: To obtain a dataset with higher evidence, a prospective multicenter study should be conducted with clearly defined criteria for each complication., (Copyright © 2015. Published by Elsevier B.V.)
- Published
- 2016
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48. Computer-Assisted Orthognathic Surgery for Patients with Cleft Lip/Palate: From Traditional Planning to Three-Dimensional Surgical Simulation.
- Author
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Lonic D, Pai BC, Yamaguchi K, Chortrakarnkij P, Lin HH, and Lo LJ
- Subjects
- Adolescent, Adult, Facial Asymmetry surgery, Female, Humans, Male, Prospective Studies, Young Adult, Cleft Lip surgery, Cleft Palate surgery, Orthognathic Surgery methods, Orthognathic Surgical Procedures methods, Surgery, Computer-Assisted methods
- Abstract
Background: Although conventional two-dimensional (2D) methods for orthognathic surgery planning are still popular, the use of three-dimensional (3D) simulation is steadily increasing. In facial asymmetry cases such as in cleft lip/palate patients, the additional information can dramatically improve planning accuracy and outcome. The purpose of this study is to investigate which parameters are changed most frequently in transferring a traditional 2D plan to 3D simulation, and what planning parameters can be better adjusted by this method., Patients and Methods: This prospective study enrolled 30 consecutive patients with cleft lip and/or cleft palate (mean age 18.6±2.9 years, range 15 to 32 years). All patients received two-jaw single-splint orthognathic surgery. 2D orthodontic surgery plans were transferred into a 3D setting. Severe bony collisions in the ramus area after 2D plan transfer were noted. The position of the maxillo-mandibular complex was evaluated and eventually adjusted. Position changes of roll, midline, pitch, yaw, genioplasty and their frequency within the patient group were recorded as an alternation of the initial 2D plan. Patients were divided in groups of no change from the original 2D plan and changes in one, two, three and four of the aforementioned parameters as well as subgroups of unilateral, bilateral cleft lip/palate and isolated cleft palate cases. Postoperative OQLQ scores were obtained for 20 patients who finished orthodontic treatment., Results: 83.3% of 2D plans were modified, mostly concerning yaw (63.3%) and midline (36.7%) adjustments. Yaw adjustments had the highest mean values in total and in all subgroups. Severe bony collisions as a result of 2D planning were seen in 46.7% of patients. Possible asymmetry was regularly foreseen and corrected in the 3D simulation., Conclusion: Based on our findings, 3D simulation renders important information for accurate planning in complex cleft lip/palate cases involving facial asymmetry that is regularly missed in conventional 2D planning.
- Published
- 2016
- Full Text
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49. Primary Overcorrection of the Unilateral Cleft Nasal Deformity: Quantifying the Results.
- Author
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Lonic D, Morris DE, and Lo LJ
- Subjects
- Cleft Lip pathology, Cleft Palate pathology, Female, Humans, Infant, Male, Nose surgery, Retrospective Studies, Treatment Outcome, Cleft Lip surgery, Cleft Palate surgery, Nose abnormalities, Rhinoplasty methods
- Abstract
Background: Because primary nasal correction by the time of lip repair has been incorporated into the treatment approach, many patients have benefitted from this combined procedure. However, primary nasal correction cannot guarantee an excellent result. Although overcorrection has been mentioned as a treatment rationale of the unilateral cleft lip nasal deformity, a detailed approach and quantitative evidence of the rationale are rare. This study evaluates whether overcorrection in the primary repair results in a quantitative improvement in nasal appearance., Patients and Methods: In this retrospective study, the inclusion criteria were patients with complete unilateral cleft lip and palate who underwent primary lip and nose repair by the age of 3 to 4 months. Primary nasal overcorrection was achieved by application of muscle to septal base suture, alar cinching suture and Tajima reversed U incision method. Patients were further divided into an overcorrected (n = 19) and nonovercorrected group (n = 19). The following parameters were identified on basilar photos of all patients taken at least 12 months after repair, ratios of cleft to noncleft side in each patient were taken and the mean for each parameter calculated: Ac angle (ACA/ACA'), alar height (AH/AH'), alar width (AW/AW'), nostril height (NH/NH`), nostril width (NW/NW'), and columellar deviation from the midline (CD/NW). The means of the overcorrected and nonovercorrected groups were then compared using the t test., Results: From all investigated measuremens, Alar height (AH/AH': overcorrected, 0.983 to nonovercorrected, 0.941; P = 0.03) and nostril height ratio (NH/NH') (NH/NH': covercorrected, 0.897 to nonovercorrected, 0.680; P = 0.003) showed statistically significant differences favoring the overcorrected group at least 12 months after surgery., Conclusions: Primary nasal overcorrection including muscle to columella base suture, alar cinch suture, and Tajima method resulted in quantitatively more long-term symmetric alae and nostril height compared to nonovercorrected patients.
- Published
- 2016
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50. The ideal split-thickness skin graft donor-site dressing: a clinical comparative trial of a modified polyurethane dressing and aquacel.
- Author
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Dornseifer U, Lonic D, Gerstung TI, Herter F, Fichter AM, Holm C, Schuster T, and Ninkovic M
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Double-Blind Method, Female, Follow-Up Studies, Humans, Male, Middle Aged, Occlusive Dressings, Prospective Studies, Risk Assessment, Skin Transplantation adverse effects, Tissue Donors, Treatment Outcome, Young Adult, Carboxymethylcellulose Sodium therapeutic use, Polyurethanes therapeutic use, Skin Transplantation methods, Wound Healing physiology, Wounds and Injuries therapy
- Abstract
Background: The almost single disadvantage of conventional polyurethane film dressings, uncontrolled leakage, is probably as often described as its numerous advantages for split-thickness skin graft donor sites. This shortcoming can be overcome by perforating the polyurethane dressing, which permits controlled leakage into a secondary absorbent dressing. The study was conducted to compare the polyurethane dressing system and Aquacel, a hydrofiber wound dressing, which also seems to fulfill all criteria of an ideal donor-site dressing., Methods: This prospective, randomized, double-blind clinical trial included 50 adult patients. Skin graft donor sites were divided equally for the application of Aquacel and polyurethane dressing. The dressings were kept unchanged for 10 days. After removal of the dressing at day 10, the epithelialization rate of both sites was evaluated. Pain scores were assessed according to a 0 to 5 numeric pain scale every postoperative day and during dressing removal., Results: On postoperative day 10, 86.4 percent of the polyurethane dressing donor sites showed complete reepithelialization compared with 54.5 percent of the Aquacel-treated donor sites (p<0.001). Polyurethane dressing was significantly less painful until and during removal of the dressing (p<0.001). There was no significant difference with respect to scar formation., Conclusions: Overall, polyurethane dressing was superior to Aquacel. Further attributes of the polyurethane dressing such as ease of application, low labor input, high patient comfort, and protection against secondary wound infection qualify this dressing system as an ideal wound covering for donor sites., Clinical Question/level of Evidence: Therapeutic, II.
- Published
- 2011
- Full Text
- View/download PDF
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