17 results on '"Verheyden AP"'
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2. Erste Erfahrungen mit der Navigation am Becken
- Author
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Hölzl, A, Glasmacher, S, Katscher, S, Verheyden, AP, and Josten, C
- Subjects
ddc: 610 - Published
- 2003
Catalog
3. Die ventrale Schraubenosteosynthese bei instabilen Densfrakturen - ein Verfahren für jedes Lebensalter ?
- Author
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Katscher, S, Gonschorek, O, Verheyden, AP, and Josten, C
- Subjects
ddc: 610 - Published
- 2003
4. Die Marknagelung proximaler und distaler Unterschenkelfrakturen mit dem anatomisch optimierten SIRUS-Marknagelsystem mit seinen erweiterten Verriegelungsmöglichkeiten - eine kritische Analyse
- Author
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Schwarz, C, Verheyden, AP, Glasmacher, S, and Josten, C
- Subjects
ddc: 610 - Published
- 2003
5. Die funktionelle Diagnostik des vorderen Kreuzbandes am Kniegelenk im vertikal-offenen MRT
- Author
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Lob, T, Verheyden, AP, Schmidt, F, and Josten, C
- Subjects
ddc: 610 - Published
- 2003
6. Neues Verfahren zur 3D-Analyse komplexer anatomischer Lagebeziehungen am Beispiel der geometrischen Optimierung eines Implantatmodells am Femur
- Author
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Seiwerts, M, primary, Busse, H, additional, Schwarz, C, additional, Bode, M, additional, Verheyden, AP, additional, Josten, C, additional, and Kahn, T, additional
- Published
- 2004
- Full Text
- View/download PDF
7. Development and Evaluation of the OF Pelvis Score for Osteoporotic Pelvic Ring Fractures - A Retrospective Assessment of Therapy Recommendations for 107 Patients.
- Author
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Spiegl UJA, Schnake KJ, Scheyerer MJ, Mendel T, Osterhoff G, Sprengel K, Bäumlein M, Behr L, Franck A, Gercek E, Grüninger S, Hartung P, Hauck S, Jacobs C, Katscher S, Klauke F, Liepold K, Müller CW, Müller M, Piltz S, Pätzold R, Riehle M, Schmeiser G, Verheyden AP, Zimmermann V, and Ullrich B more...
- Abstract
The aim of this study was to develop a simple and reliable score which supports decision making between non-operative and operative treatment in patients with osteoporotic pelvic fractures.Between 2018 to 2020, the OF Pelvis Score was developed during a total of 5 meetings of the Working Group on Osteoporotic Fractures of the Spine Section of the German Society of Orthopaedics and Trauma. The OF Pelvis Score as a decision aid between non-surgical and surgical treatment was developed by expert consensus after analysis of numerous geriatric sacral and pelvic ring fractures from several hospitals. Subsequently, retrospective evaluation of the score was performed on consecutive patients from three hospitals.The following parameters were considered relevant to decision making between non-surgical and surgical treatment and were incorporated into the score: fracture morphology using the OF Pelvis Classification, pain status, level of mobilisation, fracture-related neurological deficits, health status, and the modifiers already integrated into the OF Pelvis classification. If the score is < 8, non-surgical therapy is recommended; if the score is > 8, surgical therapy is recommended; if the score is 8, there is a relative indication for surgery. The OF Pelvis Score was then evaluated retrospectively in a total of 107 patients, according to records. The OF Pelvis Score was 8 points in 4 patients (3.7%), all of whom received surgical treatment. Of the remaining 103 patients, 93 received score-compliant therapy (90.3%). Among these, 4 of the patients who did not receive score-compliant care refused the recommended surgery, so the actual therapy recommendation was score-compliant in 94.2%.The OF Pelvis Score can be used to derive a therapy recommendation in many patients in clinical practice. Because of the possible change of clinical parameters during the course of the disease, the score has a dynamic character. In the retrospective evaluation, the recommendations from the OF Pelvis Score were in close accordance with the therapy actually performed., Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.) more...
- Published
- 2024
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8. Recommendations for Diagnosis and Treatment of Odontoid Fractures in Geriatric Patients.
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Osterhoff G, Schnake K, Scheyerer MJ, Ullrich BW, Hartmann F, Franck A, Koepp H, Reinhold M, Schmeiser G, Sprengel K, Zimmermann V, Siekmann H, Badke A, Gebhard H, Täubel KC, Grüninger S, Verheyden AP, Schleicher P, and Spiegl UJA more...
- Subjects
- Aged, Fracture Fixation, Internal, Fracture Healing, Humans, Fractures, Bone, Odontoid Process diagnostic imaging, Odontoid Process injuries, Odontoid Process surgery
- Abstract
Background: Odontoid fractures in geriatric patients represent an entity of increasing incidence with a high rate of morbidity and mortality. The optimal diagnostic and therapeutic management is being controversially discussed in the literature., Methods: In a consensus process and based on the current literature, the members of the working groups "Osteoporotic Fractures" and "Upper Cervical Spine" of the German Society for Orthopaedics and Trauma Surgery (DGOU) defined recommendations for the diagnostics and treatment of odontoid fractures in geriatric patients., Results: For the diagnosis of odontoid fractures in symptomatic patients, computed tomography represents the gold standard, along with conventional radiographs. Magnetic resonance and dynamic imaging can be used as ancillary imaging modalities. With regard to fracture classification, the systems described by Anderson/D'Alonzo and by Eysel/Roosen have proved to be of value. A treatment algorithm was developed based on these classifications. Anderson/D'Alonzo type 1, type 3, and non-displaced type 2 fractures usually can be treated non-operatively. However, a close clinical and radiological follow-up is essential. In Anderson/D'Alonzo type 2 fractures, operative treatment is associated with better fracture healing. Displaced type 2 and type 3 fractures should be stabilized operatively. Type 2 fractures with suitable fracture patterns (Eysel/Roosen 2A/B) can be stabilized anteriorly. Posterior C I/II-stabilization procedures are well established and suitable for all fracture patterns., Competing Interests: The authors declare that they have no conflict of interest./Die Autoren geben an, dass kein Interessenkonflikt besteht., (Thieme. All rights reserved.) more...
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- 2020
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9. Treatment of Fractures of the Thoracolumbar Spine: Recommendations of the Spine Section of the German Society for Orthopaedics and Trauma (DGOU).
- Author
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Verheyden AP, Spiegl UJ, Ekkerlein H, Gercek E, Hauck S, Josten C, Kandziora F, Katscher S, Kobbe P, Knop C, Lehmann W, Meffert RH, Müller CW, Partenheimer A, Schinkel C, Schleicher P, Scholz M, Ulrich C, and Hoelzl A more...
- Abstract
Study Design: consensus paper with systematic literature review., Objective: The aim of this study was to establish recommendations for treatment of thoracolumbar spine fractures based on systematic review of current literature and consensus of several spine surgery experts., Methods: The project was initiated in September 2008 and published in Germany in 2011. It was redone in 2017 based on systematic literature review, including new AOSpine classification. Members of the expert group were recruited from all over Germany working in hospitals of all levels of care. In total, the consensus process included 9 meetings and 20 hours of video conferences., Results: As regards existing studies with highest level of evidence, a clear recommendation regarding treatment (operative vs conservative) or regarding type of surgery (posterior vs anterior vs combined anterior-posterior) cannot be given. Treatment has to be indicated individually based on clinical presentation, general condition of the patient, and radiological parameters. The following specific parameters have to be regarded and are proposed as morphological modifiers in addition to AOSpine classification: sagittal and coronal alignment of spine, degree of vertebral body destruction, stenosis of spinal canal, and intervertebral disc lesion. Meanwhile, the recommendations are used as standard algorithm in many German spine clinics and trauma centers., Conclusion: Clinical presentation and general condition of the patient are basic requirements for decision making. Additionally, treatment recommendations offer the physician a standardized, reproducible, and in Germany commonly accepted algorithm based on AOSpine classification and 4 morphological modifiers., Competing Interests: Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. more...
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- 2018
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10. [Comments on: Cervical myelopathy after mild whiplash injury to the cervical spine].
- Author
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Verheyden AP
- Subjects
- Combined Modality Therapy methods, Decompression, Surgical methods, Diagnosis, Differential, Humans, Male, Middle Aged, Spinal Fusion methods, Treatment Outcome, Whiplash Injuries surgery, Cervical Vertebrae abnormalities, Spinal Cord Diseases etiology, Spinal Cord Diseases prevention & control, Spondylosis complications, Spondylosis surgery, Whiplash Injuries complications
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- 2015
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11. [Recommendations for the treatment of thoracolumbar and lumbar spine injuries].
- Author
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Verheyden AP, Hölzl A, Ekkerlein H, Gercek E, Hauck S, Josten C, Kandziora F, Katscher S, Knop C, Lehmann W, Meffert R, Müller CW, Partenheimer A, Schinkel C, Schleicher P, Schnake KJ, Scholz M, and Ulrich C more...
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- Germany, Humans, Minimally Invasive Surgical Procedures standards, Practice Guidelines as Topic, Lumbar Vertebrae injuries, Lumbar Vertebrae surgery, Spinal Fusion standards, Spinal Injuries therapy, Thoracic Vertebrae injuries, Thoracic Vertebrae surgery, Vertebroplasty standards
- Abstract
This paper gives recommendations for treatment of thoracolumbar and lumbar spine injuries. The recommendations are based on the experience of the involved spine surgeons, who are part of a study group of the "Deutsche Gesellschaft für Unfallchirurgie" and a review of the current literature. Basics of diagnostic, conservative, and operative therapy are demonstrated. Fractures are evaluated by using morphologic criteria like destruction of the vertebral body, fragment dislocation, narrowing of the spinal canal, and deviation from the individual physiologic profile. Deviations from the individual sagittal profile are described by using the monosegmental or bisegmental end plate angle. The recommendations are developed for acute traumatic fractures in patients without severe osteoporotic disease. more...
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- 2011
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12. [Thoracolumbar spine].
- Author
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Verheyden AP
- Subjects
- Germany, Humans, Minimally Invasive Surgical Procedures standards, Practice Guidelines as Topic, Lumbar Vertebrae injuries, Lumbar Vertebrae surgery, Spinal Fusion standards, Spinal Injuries therapy, Thoracic Vertebrae injuries, Thoracic Vertebrae surgery, Vertebroplasty standards
- Published
- 2011
- Full Text
- View/download PDF
13. [Isolated fractures of the olecranon].
- Author
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Hölzl A and Verheyden AP
- Subjects
- Accidental Falls, Adult, Aged, Casts, Surgical, Child, Fracture Healing physiology, Fractures, Bone classification, Humans, Muscle Strength physiology, Physical Therapy Modalities, Postoperative Care, Postoperative Complications physiopathology, Range of Motion, Articular physiology, Fracture Fixation, Internal methods, Fractures, Bone surgery, Elbow Injuries
- Abstract
Fractures of the olecranon account for 7% of fractures in adult patients. Of all elbow fractures, 38% are isolated fractures of the olecranon. Falling on the 90 degrees flexed elbow is the most common cause of isolated olecranon fractures. Reconstitution of the joint surface is the main treatment goal, as well as stability of the joint and full range of motion and muscular strength. This can only be achieved in most cases by open reduction and precision osteosynthesis. Tension band wiring and plate osteosynthesis are the most commonly used techniques. Operative therapy is the therapy of choice, since it permits early physical therapy. Some non-dislocated fractures and fractures in elderly and multimorbid patients are indications for conservative therapy. more...
- Published
- 2008
- Full Text
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14. [Operative treatment of isolated fractures of the olecranon].
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Hölzl A and Verheyden AP
- Subjects
- Bone Plates, Bone Screws, Bone Wires, Elbow Joint diagnostic imaging, Elbow Joint surgery, External Fixators, Fracture Fixation, Intramedullary methods, Fractures, Comminuted diagnostic imaging, Fractures, Comminuted surgery, Humans, Postoperative Care, Radiography, Fracture Fixation, Internal methods, Elbow Injuries
- Published
- 2008
- Full Text
- View/download PDF
15. The endoscopically assisted simultaneous posteroanterior reconstruction of the thoracolumbar spine in prone position.
- Author
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Verheyden AP, Hoelzl A, Lill H, Katscher S, Glasmacher S, and Josten C
- Subjects
- Adult, Aged, Female, Humans, Male, Middle Aged, Minimally Invasive Surgical Procedures, Postoperative Complications prevention & control, Prone Position, Prospective Studies, Treatment Outcome, Endoscopy, Lumbar Vertebrae surgery, Plastic Surgery Procedures, Spinal Fusion methods, Thoracic Vertebrae surgery
- Abstract
Background Context: The reconstruction of the anterior column of the thoracolumbar spine has become more common in the last few years, due largely to the unfavorable results of exclusively posterior surgical treatment, which has been associated with a lack of about 10 degrees of kyphosis correction after removal of the instrumentation. The minimally invasive anterior techniques have reduced the morbidity of the anterior approach significantly., Purpose: A minimally invasive technique for anterior stabilization of the spine may reduce the morbidity of the open approach. Irrespective of an anterior open or an endoscopic approach, the posteroanterior instrumentation of thoracolumbar fractures requires time-consuming intraoperative maneuvers to change the patient position from prone to lateral. We describe here a standardized anterior endoscopically assisted approach for the segments T4 to L4. This approach allows the patient to remain in prone position. A 4- to 5-cm incision combined with a retractor system is used., Study Design/setting: In a prospective study, all patients of our clinic who underwent surgery of the thoracolumbar spine between July 1999 and May 2001 were registered. Study criteria were duration of surgery, duration of anesthesia, intra- and postoperative complications., Patient Sample: Between July 1999 and May 2001, 42 patients (25 male, 17 female, average age of 41.9 years), who presented with 55 injured spinal levels and underwent surgery of the thoracolumbar spine in prone position, were included., Outcome Measures: Duration of surgery (posterior/anterior/total), duration of anesthesia, method of instrumentation, intra- and postoperative complications, postoperative hospital stay and radiographs were evaluated., Methods: Surgery was performed in prone position. A thoracic approach was used for instrumentation of T9 to L2. A retroperitoneal approach was used for stabilization of L1 to L5. Both procedures were endoscopically assisted with a new retractor system (Synframe; Synthes GmbH, Umkirch, Germany). In this manner, only an incision 4 to 5 cm long and a stab incision for the endoscope were required. The whole procedure was performed in prone position without a change of position during surgery., Results: A total of 42 patients underwent surgery following this technique: 14 isolated anterior procedures (median duration of surgery, 181 minutes); 13 simultaneous one-stage procedures (median duration of surgery: 210 minutes) and 15 combined two-stage procedures (median duration of surgery: 90 minutes posterior, 120 minutes anterior, 240 minutes posterior+anterior). In the simultaneous posteroanterior procedures, the anterior instrumentation was performed 20 times using one rod, twice using two rods and in six patients simply by bone grafting. No intraoperative complications were observed. In the postoperative course, one case of pneumothorax, one case of hemothorax and one case of transient intercostal neuralgia occurred., Conclusion: The approach to the anterior spine in prone position is feasible by using a self-holding retractor system for the region between T4 and L4. The duration of anesthesia for the one-stage simultaneous procedure was reduced by about 40 minutes, because changing the position of the patient is no longer necessary. The minimal incision, in combination with the retractor system, significantly reduces cost by allowing the use of less expensive instruments and implants. The advantages of the open and the endoscopic techniques are combined, while their disadvantages are minimized. The main advantage of the prone position is the opportunity to access the anterior and posterior spine simultaneously, which is especially helpful in reduction maneuvers. more...
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- 2004
- Full Text
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16. Proximal humeral fractures: how stiff should an implant be? A comparative mechanical study with new implants in human specimens.
- Author
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Lill H, Hepp P, Korner J, Kassi JP, Verheyden AP, Josten C, and Duda GN
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- Adult, Aged, Aged, 80 and over, Biomechanical Phenomena, Bone Plates, Elasticity, Female, Humans, Male, Materials Testing, Middle Aged, Prosthesis Failure, Random Allocation, Fracture Fixation, Internal, Prostheses and Implants, Shoulder Fractures surgery
- Abstract
Background: The objective of this study was to determine the in vitro characteristics of the clinically used and newly developed implants for the stabilization of proximal humeral fractures under static and cyclic loading. The goal was to optimize implant stiffness for fracture stabilization even in weak bone stock., Methods: In a laboratory study using 35 fresh human humeri, the specimens were randomized into 5 groups, which included the clinically used humerus T-plate (HTP), the cross-screw osteosynthesis (CSO), the unreamed proximal humerus nail with spiral blade (UHN), the recently developed Synclaw Proximal Humerus Nail (Synclaw PHN) and the angle-stable Locking Compression Plate Proximal Humerus (LCP-PH). The implant stiffness was determined for three clinically relevant load cases: axial compression, torsion and varus bending. In addition, a cyclic varus-bending test was performed to determine the implant properties under cyclic loading., Results: In contrast to a rather elastic and minimally invasive implant(LCP-PH), the conventionally designed ones (Synclaw PHN, CSO, HTP, UHN) showed rather high stiffness values under static loading. In cyclic loading, a strong decrease in stiffness ( p<0.05) was found for the rigid implants HTP and UHN. In comparison with the other implants, only the elastic implant (LCP-PH) showed a significantly lower load reduction in a weak bone stock (17+/-6.2%)., Conclusion: The high initial stiffness of rigid implants led to an early loosening and failure of the implant-bone interface under cyclic loading. Implants with low stiffness and elastic characteristics, however, appear to minimize the peak stresses at the bone-implant interface, making them particularly suitable for fracture fixation in osteoporotic bone. more...
- Published
- 2003
- Full Text
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17. [Endoscopically assisted minimally invasive reconstruction of the anterior thoracolumbar spine in prone position].
- Author
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Verheyden AP, Katscher S, Gonschorek O, Lill H, and Josten C
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- Adult, Aged, Bone Screws, Female, Fracture Fixation, Internal instrumentation, Humans, Male, Middle Aged, Prone Position, Spinal Fractures diagnostic imaging, Spinal Fusion, Tomography, X-Ray Computed, Endoscopy, Fracture Fixation, Internal methods, Lumbar Vertebrae injuries, Lumbar Vertebrae surgery, Minimally Invasive Surgical Procedures, Spinal Fractures surgery, Thoracic Vertebrae injuries, Thoracic Vertebrae surgery
- Abstract
Irrespective of an anterior open or endoscopic approach, the combined postero-anterior instrumentation of thoracolumbar fractures requires time consuming intraoperative maneuvers changing the patients position from prone to lateral.A standardised anterior endoscopically assisted approach for the segments Th4 to L4 is described, allowing the patient to remain in prone position, using a 4-5cm incision combined with a retractor system. The approach to the anterior spine in prone position is feasible by using a self holding retractor system for the region from Th4 to L4. Time of anaesthesia for the one stage combined procedure can be reduced by about 40 min, when changing the position of the patient is no longer necessary. The minimal incision in combination with the retractor system allows mainly the use of conventional instruments and implants, which provides reasonable lower costs. The advantages of the open and the endoscopical technique are combined. The main advantage of the prone position is the opportunity to access the anterior and posterior spine simultaneously, which is extremely helpful in reduction maneuvers. more...
- Published
- 2002
- Full Text
- View/download PDF
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