187 results on '"Imam MA"'
Search Results
152. Contemporary cemented versus uncemented hemiarthroplasty for the treatment of displaced intracapsular hip fractures: a meta-analysis of forty-two thousand forty-six hips.
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Imam MA, Shehata MSA, Elsehili A, Morsi M, Martin A, Shawqi M, Grubhofer F, Chirodian N, Narvani A, and Ernstbrunner L
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- Cementation, Humans, Bone Cements therapeutic use, Femoral Neck Fractures surgery, Hemiarthroplasty methods, Intra-Articular Fractures surgery
- Abstract
Introduction: Controversy exists regarding the use of cement for hemiarthroplasty to treat displaced intracapsular hip fractures. The aim of this systematic review and meta-analysis was to compare the clinical outcomes between contemporary cemented and contemporary uncemented hemiarthroplasty for the treatment of displaced femoral neck fractures., Methods: Literature searches of PubMed, Scopus, Web of Science, and Cochrane Central, up to May 2017, were performed. We included randomized controlled trials (RCTs) and observational studies comparing contemporary cemented with contemporary uncemented hemiarthroplasty. Data were pooled as mean difference (MD) or risk ratio (RR) with 95% confidence interval (CI) in a meta-analysis model. Studies with the Thompson and Austin Moore prostheses were excluded., Results: A total of 29 studies (9 RCTs and 20 observational studies), with a total of 42,046 hips, were included. Meta-analysis showed that the cemented group was associated with fewer periprosthetic fractures (RR = 0.44, 95% CI [0.21, 0.91]), longer operative time (MD = 11.25 min, 95% CI [9.85, 12.66]), more intraoperative blood loss (MD = 68.72 ml, 95% CI [50.76, 86.69]), and higher heterotopic ossification (RR = 1.79, 95% CI [1.11, 2.88]) compared with the uncemented group. Meta-analysis showed no significant difference in terms of post-operative hip function, hip pain, reoperation rate, prosthetic dislocations, aseptic loosening, wound infection, and hospital stay., Conclusions: This meta-analysis shows that contemporary cemented prostheses have less intra-operative and post-operative fractures, but longer operative time, more intra-operative blood loss, and heterotopic ossifications. Otherwise, there were no significant differences between both groups.
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- 2019
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153. Intraoperative stability assessment in reverse shoulder arthroplasty.
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Javed S, Imam MA, and Monga P
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- 2019
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154. Superior Capsule Reconstruction: What Do We Know?
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Dimock RAC, Malik S, Consigliere P, Imam MA, and Narvani AA
- Abstract
The management of irreparable rotator cuff tears remains challenging. Since its introduction by Mihata in 2012, superior capsule reconstruction (SCR) has grown in popularity at an astonishingly rapid rate. The aim of this article is to provide a comprehensive review of the available literature, in order to highlight what has so far been published on SCR, covering all aspects including biomechanical, clinical and radiological studies as well as descriptions of the various techniques for performing the procedure. The short-term clinical results of SCR are promising, but there is need for further long-term studies, as well as randomised controlled trials comparing SCR to other treatment modalities for irreparable rotator cuff tears. Further imaging studies looking at graft healing rates are also required as the healing rates published so far are variable. Additionally, the mechanism of action by which SCR delivers good short-term functional outcomes needs further clarification, as does the importance of the choice of graft type and thickness.
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- 2019
155. Distal Triceps Rupture Repair: The Triceps Pulley-Pullover Technique.
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Dimock RAC, Kontoghiorghe C, Consigliere P, Salamat S, Imam MA, and Narvani AA
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Distal triceps rupture is an uncommon but debilitating injury, and surgical fixation is almost invariably warranted. A number of techniques have been described in the literature in which combinations of transosseous tunnels and bone anchors have been used. We describe a modification to existing techniques-the triceps pulley-pullover technique with all-suture anchors. This technique minimizes bone loss, while maximizing the bone-tendon contact area and creating a double-row repair to optimize strength and healing.
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- 2019
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156. Are commercially-available precontoured anatomical clavicle plating systems offering the purported superior optimum fitting to the clavicle? A cadaveric analysis and review of literature.
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Bauer DE, Hingsammer A, Schenk P, Vlachopoulos L, Imam MA, Fürnstahl P, and Meyer DC
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- Cadaver, Clavicle diagnostic imaging, Clavicle injuries, Computer Simulation, Diaphyses anatomy & histology, Diaphyses diagnostic imaging, Diaphyses injuries, Female, Fracture Fixation, Internal methods, Humans, Male, Prosthesis Design, Tomography, X-Ray Computed, Bone Plates, Clavicle anatomy & histology, Fracture Fixation, Internal instrumentation, Fractures, Bone surgery
- Abstract
Purpose: The indication for operative treatment of displaced midshaft clavicle fractures remains controversial. However, if plate fixation is considered, implant prominence and skin irritation are the most common causes for re-operation. Low profile implants as well as closely contouring plates to the individual anatomy may reduce these complications. The aim of this study was to compare the fitting accuracy and implant prominence of 3.5mm pelvic reconstruction plates (PRP) with pre-contoured anatomical clavicle plates (PACP) for midshaft clavicle fractures., Methods: Three-dimensional data of the largest, median and smallest male and female clavicle of an existing database of 89 cadaveric clavicles were included for analysis. A three-dimensional model of a commercially available PACP was used for digitally positioning of the plate on the segmented clavicles. Three-dimensional printouts of each clavicle were produced and the 3.5mm reconstruction plates were manually bent and positioned by the senior author. Computed tomography scans and three-dimensional reconstructions were then obtained to digitally compare the fitting accuracy and implant prominence., Results: Pelvic reconstruction plates offered superior fitting accuracy and lower implant prominence compared to PACP. The largest difference in implant prominence was observed in large sized female clavicles and measured 3.6mm., Conclusion: Both, the less costly PRP plates and commercially available PACP for midshaft fractures of the clavicle demonstrated a clinically acceptable fitting accuracy. The manually bent pelvic-reconstruction plates demonstrated reduced implant prominence with superior fitting. Hypothetically this might contribute to a reduced rate of reoperation., Level of Evidence: Level IV cadaveric study., (Copyright © 2018 Elsevier Masson SAS. All rights reserved.)
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- 2018
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157. Lateral unicompartmental knee replacement: a systematic review of reasons for failure.
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Ernstbrunner L, Imam MA, Andronic O, Perz T, Wieser K, and Fucentese SF
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- Disease Progression, Humans, Prosthesis Design, Treatment Outcome, Arthroplasty, Replacement, Knee adverse effects, Knee Prosthesis adverse effects, Osteoarthritis, Knee surgery, Prosthesis Failure etiology
- Abstract
Purpose: Currently, individual studies lack the power to successively illustrate different failure modes; therefore, we undertook a systematic review to examine lateral unicompartmental knee replacement (lat UKR) failure modes. Furthermore, we compared early with midterm and late failures and fixed-bearing with mobile-bearing implants., Methods: A search using the databases of PubMed, EMBASE, Cochrane, and annual registries was performed to search for failed lat UKRs. Studies were included when they reported more than four failures, described failure modes and were minimum level IV studies. Data was analysed based on overall failure modes, fixed- vs. mobile bearing and early (<5 years) vs. midterm (5-10 years) vs. late failures (>10 years)., Results: Fourteen cohort studies and two registry-based studies were included. A total of 336 overall failures, 87 time-dependent failures, and 175 implant-specific failures were identified. The main overall causes of failure were osteoarthritis (OA) progression (30%) and aseptic loosening (22%). These were followed by less common causes such as instability (7%), unexplained pain (5%), infection (5%), polyethylene wear (5%), and bearing dislocation (5%). Bearing dislocation was the most common early failure (29%) and also the most common failure among mobile-bearing implants (27%). In midterm and late failures, OA progression had the highest rates (59% and 78% respectively) and was also the most common type of failure in fixed-bearing implants (44%)., Conclusions: Progression of OA and aseptic loosening are the major overall failure modes in lat UKR. Bearing dislocation was the main failure mode in early years and in mobile-bearing implants, whereas OA progression caused most failures in late years and in fixed-bearing implants., Level of Evidence: Systematic Review of minimum level IV studies.
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- 2018
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158. Erratum to: Staged Revision With Antibiotic Spacers for Shoulder Prosthetic Joint Infections Yields High Infection Control.
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Grubhofer F, Imam MA, Wieser K, Achermann Y, Meyer DC, and Gerber C
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- 2018
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159. Mechanical properties of Triclosan sutures.
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Jungwirth-Weinberger A, Grubhofer F, Imam MA, Bachmann E, and Wirth S
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- Biomechanical Phenomena, Materials Testing, Polyglactin 910, Surgical Wound Infection prevention & control, Tensile Strength, Wound Healing, Sutures, Triclosan
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To avoid infections and wound healing disorders, Triclosan coated sutures have been invented. Little is known of these sutures regarding their tensile properties. Three different Triclosan coated sutures (Vicryl 1 plus, PDS 0 plus, Monocryl 3-0 plus) were tested at several time points over 42 days regarding load to failure, strain, and stiffness compared to their non-coated versions (Vicryl 1, PDS 0, Monocryl 3-0). Four different measurement points were made. Suture loops were fixed in a material testing machine over two metal bars which were moved apart creating a stress to the fiber. Unpaired, two-tailed t-test were performed for each group (untreated and treated) while level of significance was defined at a level of p < 0.05. Vicryl 1 was significantly stronger on day 14 than Vicryl 1 plus (p = 0.033). On day 28, significant changes were found in PDS 0 which was weaker compared to PDS 0 plus (p = 0.039) and Vicryl 1 which was stronger than Vicryl 1 plus (p = 0.032). We have seen that Vicryl 1 plus sutures are significantly weaker according to loading to failure after 14 and 28 days, which might cause incisional hernias. PDS 0 sutures are used to reconstruct tendons, therefore a longer durableness might be of interest as re-ruptures of tendons are problematic. Our in vitro findings support, the use of Triclosan coated PDS plus sutures and Vicryl sutures as they show a longer resistance. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1777-1782, 2018., (© 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.)
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- 2018
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160. Improving consent in patients undergoing surgery for fractured neck of femur.
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Thiruchandran G, McKean AR, Rudran B, Imam MA, Yeong K, and Hassan A
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- Fracture Fixation methods, Humans, Medical Audit, Practice Guidelines as Topic, United Kingdom, Consent Forms standards, Consent Forms statistics & numerical data, Femoral Neck Fractures surgery, Fracture Fixation adverse effects, Postoperative Complications classification, Postoperative Complications etiology, Quality Improvement organization & administration, Risk Management methods, Risk Management organization & administration
- Abstract
Background Neck of femur fractures and their subsequent operative fixation are associated with high rates of perioperative morbidity and mortality. Consenting in this setting is suboptimal with the Montgomery court ruling changing the perspective of consent. This quality improvement project assessed the adequacy of consenting against British Orthopaedic Association-endorsed guidance and implemented a series of changes to improve the documentation of risks associated with surgery for fractured neck of femur. Methods Seventy consecutive patients who underwent any operative fixation of a neck of femur fracture were included over a 6-month period at a single centre. Patients unable to consent or without electronic notes were excluded. Consent forms were analysed and the documented potential risks or complications associated with surgery were compared to British Orthopaedic Association-endorsed guidance. A series of changes (using the plan, do study, act (PDSA) approach) was implemented to improve the adequacy of consent. Results Documentation of four out of 12 potential risks or complications was recorded in <50% of cases for patients with intracapsular fractures (n=35), and documentation of seven out of 12 potential risks or complications was recorded in <50% of cases for patients with extracapsular fractures (n=35). Re-audit following raising awareness and attaching consent guidance showed 100% documentation of potential risks or complications in patients with intracapsular and extracapsular fractures (n=70). A neck of femur fracture-specific consent form has been implemented which will hopefully lead to sustained improvement. Conclusions Consenting patients with fractured neck of femur for surgery in the authors' unit was suboptimal when compared to British Orthopaedic Association-endorsed consent guidance. This project has shown that ensuring such guidance is readily available has improved the adequacy of consent. The authors hope that introduction of a neck of femur fracture-specific consent form within their unit will lead to sustained adequate documentation of risks associated with surgery.
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- 2018
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161. Titanium Elastic Nails Versus Spica Cast in Pediatric Femoral Shaft Fractures: A Systematic Review and Meta-analysis of 1012 Patients.
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Imam MA, Negida AS, Elgebaly A, Hussain AS, Ernstbrunner L, Javed S, Jacob J, Churchill M, Trikha P, Newman K, Elliott D, and Khaleel A
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Background: There is a general consensus on the management of femoral fractures in children younger than two years and adolescents older than sixteen years. The best treatment for patients younger than sixteen years of age is still debatable. Titanium Elastic Nails (TEN), is widely used with some evidence, nonetheless, we undertook a systematic meta-analysis to assess the efficacy of TEN compared to Spica cast for the management of femoral shaft fracture in children aged between 2 to 16 years old., Methods: A computer literature search of PubMed, Scopus, Web of Science, CINAHL and Cochrane Central was conducted using relevant keywords. We included clinical trials and observational studies that compared TEN versus Spica cast; Records were screened for eligible studies and data were extracted and synthesized using Review Manager version 5.3 for Windows. Our search found 573 unique articles. After screening the abstract and relevant full text, 12 studies with a total of 1012 patients were suitable for the final analysis., Results: In terms terms of union (in weeks), the reported effect sizes favoured the TEN group in two included studies only. Moreover, the overall standardized mean difference in sagittal (SMD -0.48, 95% CI [-0.70 to -0.26], P<0.001 ) and coronal angulations (SMD -0.66, 95% CI [-1.00 to -0.31], P<0.001 ) favored TEN fixation in management of femoral fractures younger than 16 years. The reported length of hospital stay was not consistent across studies. The overall risk ratio of malalignment (RR=0.39, 95% CI [0.27 to 0.57], P<0.001 ) favored the TEN as well as walking independently. Based on our analysis, TEN treatment is superior to traction and hip spica for femoral fractures in patients younger than 16 years old., Conclusion: Based on our analysis we recommend the use of TEN fixation in management of pediatric femoral fractures in patients younger than 16 years.
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- 2018
162. Compressive Stockings After Hindfoot and Ankle Surgery.
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Grubhofer F, Catanzaro S, Schüpbach R, Imam MA, and Wirth S
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- Foot, Humans, Orthopedics, Pain Measurement, Prospective Studies, Quality of Life, Ankle surgery, Ankle Joint surgery
- Abstract
Background: Swelling and pain are common after foot and ankle procedures. We hypothesized that compressive stockings (CS) treatment after hindfoot surgery would positively influence patient outcomes., Methods: We undertook this randomized controlled trial in 87 consecutive patients to analyze the clinical effect of CS after hindfoot and ankle surgery and evaluate CS-wearing compliance using sensors that were implanted into CS. Ankle swelling, pain status, quality of life (SF-36 score), and the American Orthopaedic Foot & Ankle Score (AOFAS) were set as the primary end points. The CS wearing time in hours and percentage were investigated as the secondary end points. All participants with CS (group I) were informed about the implanted sensor after the CS were taken off. A subgroup analysis of group I was performed to detect differences between patients with high vs low compliance., Results: At 12 weeks, the results of ankle swelling (mean 234 mm in group I and 232 mm in group II), pain in the visual analog scale (1.7 group I vs 1.9 in group II), the SF-36 score (38 points in group I vs 30 points in group II), and the AOFAS score (a mean of 76 points in both groups) showed no statistical differences between the 2 groups. The mean wearing time was 136 (range, 0-470) hours, which corresponds to a compliance rate of 65%. Sixteen participants had high compliance (>80%, >170 hours), and 21 patients had low or noncompliance. The clinical results of patients with high wearing compliance were not significantly better compared to the results of patients with low compliance., Conclusion: CS therapy after ankle and hindfoot surgery was associated with a low wearing compliance and did not influence ankle swelling, function, pain, and the quality of life compared to the control group. Furthermore, the clinical results of patients with high compliance were not better compared to the results of patients with low or noncompliance wearing behavior., Level of Evidence: Level II, prospective randomized study of lower quality.
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- 2018
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163. Long-term results of total elbow arthroplasty in patients with hemophilia.
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Ernstbrunner L, Hingsammer A, Imam MA, Sutter R, Brand B, Meyer DC, and Wieser K
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- Adult, Aged, Arthritis etiology, Female, Humans, Male, Middle Aged, Range of Motion, Articular, Retrospective Studies, Treatment Outcome, Arthritis surgery, Arthroplasty, Replacement, Elbow, Elbow Joint, Hemophilia A complications, Hemophilia B complications, Postoperative Complications epidemiology
- Abstract
Hypothesis: It was hypothesized that the long-term survivorship and clinical outcome are reasonable, justifying total elbow arthroplasty (TEA) in patients with end-stage hemophilic arthropathy., Methods: From 2002 to 2012, 13 primary TEAs (Coonrad-Morrey design) were implanted in 9 consecutive patients with an average age of 55 (range, 39-76) years. Type A hemophilia was diagnosed in 7 patients and type B hemophilia in 2 patients. Clinical and radiographic results of all (11 TEAs) but 1 patient were retrospectively analyzed., Results: After a mean of 9.1 (range, 5-14) years, the mean visual analog scale score for pain, total Mayo Elbow Performance Score, and subjective elbow value were significantly improved from 5 (standard deviation, ±3) to 2 (±2; P = .007) points, from 64 (±16) to 89 (±11; P = .008) points, and from 47% (±15%) to 81% (±11%; P < .001), respectively. Whereas the flexion arc remained unchanged (P = .279), mean active pronation improved significantly (P = .024). Postoperative complications were recorded in 8 TEAs (62%), whereas 5 TEAs (38%) underwent partial component exchange after a mean of 7.2 (range, 3-10) years: 2 for periprosthetic infection, 2 for polyethylene wear, and 1 for humeral component loosening. Of the living patients after partial component exchange (n = 3), the mean final total Mayo Elbow Performance Score, flexion and rotation arc, visual analog scale score for pain, and subjective elbow value were comparable with the results of the living patients without revision surgery (n = 8)., Conclusions: TEA for patients with advanced hemophilic arthropathy is associated with a substantial complication and revision rate. However, even after revision without implant removal, it provides good functional and subjective long-term results., (Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)
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- 2018
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164. Staged Revision With Antibiotic Spacers for Shoulder Prosthetic Joint Infections Yields High Infection Control.
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Grubhofer F, Imam MA, Wieser K, Achermann Y, Meyer DC, and Gerber C
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- Adult, Aged, Aged, 80 and over, Anti-Bacterial Agents adverse effects, Arthroplasty, Replacement, Shoulder instrumentation, Bone Cements adverse effects, Databases, Factual, Debridement, Device Removal, Drug Combinations, Female, Gentamicins adverse effects, Humans, Male, Middle Aged, Prosthesis-Related Infections diagnosis, Prosthesis-Related Infections microbiology, Recovery of Function, Reoperation, Retrospective Studies, Shoulder Joint diagnostic imaging, Shoulder Joint microbiology, Shoulder Joint physiopathology, Time Factors, Treatment Outcome, Vancomycin adverse effects, Anti-Bacterial Agents therapeutic use, Arthroplasty, Replacement, Shoulder adverse effects, Bone Cements therapeutic use, Gentamicins therapeutic use, Prosthesis-Related Infections surgery, Shoulder Joint surgery, Shoulder Prosthesis, Vancomycin therapeutic use
- Abstract
Background: The treatment of periprosthetic joint infection (PJI) of the shoulder with two-stage revision arthroplasty using an antibiotic-loaded cement spacer is established strategy, but there is sparse information regarding the likelihood of infection control and restoration of shoulder., Questions/purpose: (1) What is the likelihood of infection control after two-stage revision using an antibiotic cement spacer for patients with PJI of the shoulder? (2) What are the improvements in Constant and Murley scores at 2 years after these staged revisions?, Patients and Methods: Between 2000 and 2013, we treated 48 patients with PJI of the shoulder using two-stage revision including an antibiotic-containing cement spacer during the first stage. Of those, 38 (79%) were available for review at a minimum of 24 months (mean, 52 ± 34 months). Ten patients (21%) were excluded because they were deceased (n = 3), moved abroad (n = 4), or refused followup (n = 3), leaving 38 for analysis in this retrospective study. During the first stage, removal of the prosthesis, débridement, and implantation of a gentamicin and vancomycin-filled cement spacer were performed by four different surgeons followed by antibiotic therapy (2 weeks intravenous plus 10 weeks oral). For the second stage, we generally tried a reverse total shoulder arthroplasty (RTSA; n = 26). In case of severe glenoid destruction, hemiarthroplasty (HA; n = 8) was used as a salvage option. In 14 patients the cement spacer was left in place because the patients refused further surgery or were not operable owing to medical reasons. The primary outcome included the proportion of patients achieving infection control 2 years after the second-stage procedure after implantation of the cement spacer. Infection control was determined as the absence of the Musculoskeletal Infection Society PJI criteria. The clinical outcome assessed with the Constant and Murley scores served as the secondary outcome parameter. A subgroup (RTSA; HA, spacer retention) analysis of the Constant and Murley scores was performed., Results: Successful infection control was achieved in 36 of 38 patients (95%). Patients who underwent treatment with a cement spacer had increased Constant and Murley scores at latest followup compared with their pretreatment scores (mean ± SD, 27 ± 19 versus 43 ± 20; mean difference, 17; 95% CI, 10-24; p = 0.001). For patients who underwent staged treatment followed by second-stage RTSA (n = 23), the Constant and Murley scores increased (mean ± SD, 31 ± 20 versus 51 ± 20; mean difference, 20; 95% CI, 11-30; p = 0.001). The Constant and Murley scores did not improve in patients who underwent HA (mean ± SD, 22 ±15 versus 24 ± 90; mean difference, 3; 95% CI, -10 to 16; p = 0.509) or who retained the spacer (mean ± SD, 18 ±12 versus 35 ±10; mean difference, 19; 95% CI, -5 to 44; p = 0.093)., Conclusion: Revision arthroplasty using an antibiotic-loaded cement spacer provided successful infection control in patients with periprosthetic shoulder infections in this small, retrospective series. Functional improvement was obtained after reimplantation of a reverse total shoulder prosthesis but was not seen after HA and cement spacer; however, baseline differences among patient groups very likely contributed to these differences, and they should not be attributed to implant selection alone., Level of Evidence: Level III, therapeutic study.
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- 2018
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165. Double plating of intra-articular multifragmentary C3-type distal femoral fractures through the anterior approach.
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Imam MA, Torieh A, and Matthana A
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- Adolescent, Adult, Bone Plates, Bone Transplantation, Female, Femoral Fractures diagnostic imaging, Follow-Up Studies, Fracture Fixation, Internal instrumentation, Fracture Healing, Humans, Imaging, Three-Dimensional, Knee Joint physiopathology, Male, Middle Aged, Prospective Studies, Range of Motion, Articular, Time Factors, Tomography, X-Ray Computed, Treatment Outcome, Young Adult, Femoral Fractures surgery, Fracture Fixation, Internal methods, Fractures, Comminuted surgery
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Introduction: In this prospective case series, we report a mean of 12-month follow-up of the utilization of a dual plating of distal femoral fractures. Our technique included a lateral distal femoral locked plate with a low-contact-locked medial plate and bone graft through an extended medial parapatellar anterior approach for the fixation of C3-type distal femoral fractures., Patients and Methods: Sixteen patients (11 males and 5 females) presented with supracondylar femoral fracture type C3, according to Müller long-bone classification system and its revision OA/OTA classification. These were treated using dual plating through extended anterior approach and bone grafting. Our outcomes included clinical and radiological outcomes. Secondary outcomes included postoperative complications., Results: The mean time of complete radiological union in the studied population was 6.0 ± 3.5 months with a range of 3-14 months. We have not observed postoperative varus or valgus deformity in our cohort. The majority (68.75%) of the studied patients showed significant improvement in range of motion (90°-120°) during follow-up. Eleven out of sixteen patients (68.75%) had well-to-excellent functional outcome. Poor outcome was reported in only two patients (12.50%)., Conclusions: Dual plating fixation using anterior approach for type C3 distal femoral fractures is an efficient method of management. It has several advantages such as precise exposure, easy manipulation, anatomical reduction and stable fixation. However, operative indications and instructions should be strictly followed. The surgical technique must be rigorous, and the biomechanical qualities of these implants must be understood to prevent the development of major complications.
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- 2018
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166. A systematic review of the clinical applications and complications of bone marrow aspirate concentrate in management of bone defects and nonunions.
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Imam MA, Holton J, Ernstbrunner L, Pepke W, Grubhofer F, Narvani A, and Snow M
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- Animals, Bone Marrow, Bone Marrow Transplantation adverse effects, Bone and Bones, Fractures, Bone complications, Fractures, Bone therapy, Humans, Mesenchymal Stem Cells cytology, Osteogenesis, Distraction adverse effects, Treatment Outcome, Bone Marrow Transplantation methods, Fracture Healing drug effects, Fractures, Ununited therapy, Osteogenesis, Distraction methods
- Abstract
Purpose: Fracture healing encompasses a succession of dynamic multifactorial metabolic events, which ultimately re-establishes the integrity of the biomechanical properties of the bone. Up to 10% of the fractures occurring annually will need additional surgical procedures because of impaired healing. The aim of this article is to review the current literature regarding the use of bone marrow aspirate concentrate (BMAC) and its effectiveness in the management of bone defects., Methods: We have included all published clinical literature investigating the development, techniques and applications of BMAC. Language, design and risk of bias did not deter the initial inclusion of any study. Our search was exclusively limited to studies involving human subjects. A PRISMA compliant search was carried out as published in 2009. This included the online databases: PubMed, EMBASE, clinical trial.gov and the Cochrane library from 1960 to the end of May 2015. MeSH terms used included: "Bone" AND "Marrow" AND "Aspirate" AND "Concentrate" AND "Bone Defects" AND "NONUNION". Eligible studies were independently appraised by two authors using the Critical Appraisal Skills Program checklist. For the purpose of narrative review, relevant studies were included irrespective of methodology or level of evidence., Results: Thirty-four of the 103 (48 PubMed and 55 EMBASE) results yielded by the preliminary search were included. Exclusions included three duplicate records, six letters, 17 non-orthopaedics related studies and four records irrelevant to our search topic. The CASP appraisal confirmed a satisfactory standard of 31 studies. They all had clearly defined objectives, were well designed and conducted appropriately to meet them. The published studies reported the use of BMAC in non-union and fracture healing (15 studies), bone defects (nine studies), spine fusion (two studies), distraction osteogensis (two studies) and complications related to the use of BMAC (seven studies)., Conclusions: Stem cells found in BMAC have the potential to self-renew, undertake clonal expansion and differentiate into different musculoskeletal tissues. The commercial processing of BMAC needs to be optimized in order to achieve a consistent end product, which will provide predicable and translatable results. The future potential of cell characterization in order to determine the optimum cell for repair/regeneration of bone also needs to be explored., Level of Evidence: Systematic Review of minimum level IV studies.
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- 2017
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167. A 24-Month Follow-Up of a Custom-Made Suture-Button Assembly for Syndesmotic Injuries of the Ankle.
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Imam MA, Matthana A, Kim JW, and Nabil M
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- Adolescent, Adult, Aged, Ankle Fractures diagnostic imaging, Ankle Fractures etiology, Female, Follow-Up Studies, Humans, Male, Middle Aged, Treatment Outcome, Young Adult, Ankle Fractures surgery, Fracture Fixation, Internal instrumentation, Internal Fixators, Sutures
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In the present retrospective analysis, we introduce a custom suture-button fixation device for acute ankle syndesmotic injuries that allows for early weightbearing without another planned operation for hardware removal. We evaluated 87 consecutive ankles in 87 patients (49 males [56.32%] and 38 females [43.68%]). Of the 87 patients, 15 (17.24%) withdrew or were lost to follow-up, leaving 72 patients (82.76%) in the present study. Their mean age was 35.2 (range 17 to 67) years. Nineteen patients (26.39%) presented with a pure syndesmotic disruption, and 53 (73.61%) had associated malleolar fractures. The American Orthopaedic Foot and Ankle Society scale score improved significantly from 31.2 ± 4.2 preoperatively to 88.5 ± 5.3 at an average of 24 months postoperatively (p < .0043). Revision was undertaken because of implant failure in 4 ankles (5.56%). Two revisions (2.78%) were performed in 2 ankles because of early weightbearing in the first 2 weeks after surgery. The third patient (1.39%) underwent revision at 5 weeks postoperatively. This syndesmotic reduction failure was attributed to failure of the threads, which was noted at the second surgery. The fourth patient (1.39%), a 66-year-old male, underwent revision at 5 months postoperatively because of persistent infection. An 18-month postoperative radiograph was available for all patients. The medial clear space had significantly decreased, from 8.2 ± 3.1 mm preoperatively to 3.5 ± 2.2 mm at 18 months postoperatively (p < .0344). Likewise, the tibiofibular clear space had decreased significantly, from a mean of 8.8 ± 3.7 mm preoperatively to a mean of 3.7 ± 2.2 mm at 18 months postoperatively (p < .0322). In conclusion, suture-button fixation described in the present report delivered satisfactory functional outcomes and anatomic reduction at minimum of 18 months after surgery., (Copyright © 2017 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.)
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- 2017
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168. The "Pull-Over" Technique for All Arthroscopic Rotator Cuff Repair With Extracellular Matrix Augmentation.
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Narvani AA, Imam MA, Polyzois I, Sarkhel T, Gupta R, Levy O, and Consigliere P
- Abstract
Despite the vast improvement in techniques for arthroscopic rotator cuff surgery, repairs of massive and large tears remain an issue as they are associated with significantly high failure rates, particularly in the elderly population. As a result, there has been a focus of attention to improve rotator cuff repair healing rates. One of the strategies is augmentation of the repair with a patch. Arthroscopic augmentation is, however, technically demanding with challenges in introduction and stabilization of the patch. The purpose of this Technical Note is to describe a technique for arthroscopic rotator cuff repair with augmentation, which offers additional advantages over previous techniques because it facilitates the passage of the patch as well as providing a more robust medial stabilization of the augment and therefore possibly a stronger construct.
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- 2017
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169. Nerve Transfer Versus Nerve Graft for Reconstruction of High Ulnar Nerve Injuries.
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Sallam AA, El-Deeb MS, and Imam MA
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- Adult, Female, Hand Strength, Humans, Male, Middle Aged, Neurosurgical Procedures methods, Pinch Strength, Retrospective Studies, Ulnar Nerve surgery, Young Adult, Median Nerve transplantation, Nerve Transfer methods, Peripheral Nerve Injuries surgery, Sural Nerve transplantation, Ulnar Nerve injuries
- Abstract
Purpose: To assess the efficacy of nerve transfer versus nerve grafting in restoring motor and sensory hand function in patients with complete, isolated high ulnar nerve injuries., Methods: A retrospective chart review was performed, at a minimum 2 years of follow-up, of 52 patients suffering complete, isolated high ulnar nerve injury between January 2006 and June 2013 in one specialized hand surgery unit. Twenty-four patients underwent motor and sensory nerve transfers (NT group). Twenty-eight patients underwent sural nerve grafting (NG group). Motor recovery, return of sensibility and complications were examined as outcome measures. The Medical Research Council scale was applied to evaluate sensory and motor recovery. Grip and pinch strengths of the hand were measured., Results: Twenty of 24 patients (83.33%) in the NT group regained M3 grade or greater for the adductor pollicis, the abductor digiti minimi, and the medial 2 lumbricals and interossei, compared with only 16 of 28 patients (57.14%) in the NG group. Means for percentage recovery of grip strengths compared with the other healthy hand were significantly higher for the NT group than the NG group. Sensory recovery of S3 or greater was achieved in more than half of each group with no significant difference between groups., Conclusions: Nerve transfer is favored over nerve grafting in managing high ulnar nerve injuries because of better improvement of motor power and better restoration of grip functions of the hand., Type of Study/level of Evidence: Therapeutic IV., (Copyright © 2017 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.)
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- 2017
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170. Inverted femoral head graft versus standard core decompression in nontraumatic hip osteonecrosis at minimum 3 years follow-up.
- Author
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Sallam AA, Imam MA, Salama KS, and Mohamed OA
- Subjects
- Adult, Age Factors, Cohort Studies, Female, Femur Head Necrosis diagnostic imaging, Femur Head Necrosis pathology, Follow-Up Studies, Graft Survival, Hip Joint pathology, Humans, Male, Middle Aged, Retrospective Studies, Risk Assessment, Severity of Illness Index, Sex Factors, Time Factors, Tomography, X-Ray Computed methods, Treatment Outcome, Young Adult, Bone Transplantation methods, Decompression, Surgical methods, Femur Head Necrosis surgery, Hip Joint surgery
- Abstract
Purpose: Numerous salvage surgeries were popularised to halt the progression of hip osteonecrosis (ON). We aimed to compare the clinico-radiological outcomes of inverted femoral head graft (IFHG) versus standard core decompression (SCD) in treatment of nontraumatic hip ON at pre-arthritic stage., Methods: A case review was performed at a minimum 3 years follow-up of 61 patients (71 hips; mean age 32.96 (19-50) years; mean follow-up 7.86 (3-14) years; mean body mass index 28.58 (19-46); 32 males, 29 females) suffering nontraumatic hip ON at pre-arthritic stage. 38 hips underwent SCD and 33 IFHG. The outcome was assessed by changes in modified Harris Hip Score (MHHS), need for revision surgery and progression of modified Ficat-Arlet staging. Data were analysed including logistic regression and Kaplan-Meier survivorship analysis., Results: 13/34 (38.2%) hips in SCD group were revised at 4.61 ± 2.61 years, while 7/33 (21.2%) in IFHG group at 8.43 ± 4.32 years (p = 0.023). MHHS was significantly higher in IFHG group at 1 and 3 years as well as at last follow-up (p = 0.014, 0.001 and 0.023 respectively). Clinical and radiological significant differences were found in survivorship analysis between both groups, in favor of IFHG. A higher clinical failure was noted among obese patients., Conclusions: An IFHG technique offers a better alternative regarding postoperative clinico-radiological outcomes in nontraumatic hip ON at the pre-arthritic stage. A cautious prognosis is recommended in obese patients.
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- 2017
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171. A systematic review of the concept and clinical applications of bone marrow aspirate concentrate in tendon pathology.
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Imam MA, Holton J, Horriat S, Negida AS, Grubhofer F, Gupta R, Narvani A, and Snow M
- Abstract
Tendon pathologies are a group of musculoskeletal conditions frequently seen in clinical practice. They can be broadly classified into traumatic, degenerative and overuse-related tendinopathies. Rotator cuff tears, Achilles tendinopathy and tennis elbow are common examples of these conditions. Conventional treatments have shown inconsistent outcomes and might fail to provide satisfactory clinical improvement. With the growing trend towards the use of mesenchymal stem cells (MSCs) in other branches of medicine, there is an increasing interest in treating tendon pathologies using the bone marrow MSC. In this article, we provide a systematic literature review documenting the current status of the use of bone marrow aspirate concentrate (BMAC) for the treatment of tendon pathologies. We also asked the question on the safety of BMAC and whether there are potential complications associated with BMAC therapy. Our hypothesis is that the use of BMAC provides safe clinical benefit when used for the treatment of tendinopathy or as a biological augmentation of tendon repair. We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) checklist while preparing this systematic review. A literature search was carried out including the online databases of PubMed, EMBASE, ClinicalTrial.gov and the Cochrane Library from 1960 to the end of May 2015. Relevant studies were selected and critically appraised. Data from eligible studies were extracted and classified per type of tendon pathology. We included 37 articles discussing the application and use of BMAC for the treatment of tendon pathologies. The Critical Appraisal Skills Program (CASP) appraisal confirmed a satisfactory standard of 37 studies. Studies were sub-categorised into: techniques of extraction, processing and microscopic examination of BMAC (n = 18), where five studies looked at the evaluation of aspiration techniques (n = 5), augmentation of rotator cuff tears (n = 5), augmentation of tendo-achilles tendon (n = 1), treatment of gluteal tendon injuries (n = 1), management of elbow epicondylitis (n = 2), management of patellar tendinopathy (n = 1) and complications related to BMAC (n = 5). Multiple experimental studies investigated the use of BMAC for tendon repair; nonetheless, there are only limited clinical studies available in this field. Unfortunately, due to the scarcity of studies, which were mainly case series, the current level of evidence is weak. We strongly recommend further future randomised controlled studies in this field to allow scientists and clinicians make evidence-based conclusions., (© The Authors, published by EDP Sciences, 2017.)
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- 2017
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172. Verification of in vivo accuracy of Trumatch™ patient-specific instrumentation in total knee replacement using pin-less computer navigation.
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Briffa N, Imam MA, Mallina R, Abdelkafy A, and Adhikari A
- Subjects
- Aged, Arthroplasty, Replacement, Knee methods, Bone Malalignment diagnosis, Bone Malalignment surgery, Female, Femur surgery, Humans, Male, Osteoarthritis, Knee surgery, Patient Care Planning, Preoperative Care, Prospective Studies, Surgery, Computer-Assisted, Tibia surgery, Arthroplasty, Replacement, Knee instrumentation
- Abstract
Purpose: Accurate component alignment in total knee replacement (TKR) is one of the important factors in determining long-term survivorship. This has been achieved by conventional jigs, computer-assisted technology (CAS) and more recently patient-specific instrumentation (PSI). The purpose of the current study was to investigate the in vivo accuracy of Trumatch™ PSI using validated pin-less computer navigation system., Method: Twenty consecutive selected patients that fulfilled our inclusion/exclusion criteria underwent TKR using PSI. Coronal alignment, posterior slope, resection thickness and femoral sagittal alignment were recorded using pin-less navigation. The position of the actual cutting block was appropriately adjusted prior to proceeding to definitive resections., Results: The coronal alignment using PSI without the assistance of navigation would have resulted in 14 (70 %) within ±3°, 11 (55 %) within ±2° and 6 (30 %) outside acceptable alignment. Thirty-five percentage of proposed femur sagittal alignment and 55 % of posterior tibial slope were achieved within ±3°. Components size was accurately predicted in 95 % of femurs and 90 % of tibia., Conclusion: The purported advantages in restoring alignments using Trumatch™ PSI alone over standard equipment are debatable. However, it predicts sizing well, and femoral coronal alignment is reasonable. Combining Trumatch™ PSI with CAS will allow in vivo verification and necessary corrections., Level of Evidence: IV.
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- 2017
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173. A systematic review of the concept and clinical applications of Bone Marrow Aspirate Concentrate in Orthopaedics.
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Imam MA, Mahmoud SSS, Holton J, Abouelmaati D, Elsherbini Y, and Snow M
- Abstract
Introduction: Mesenchymal stem cells (MSC's) are believed to have multipotent plasticity with the capability to differentiate along multiple cell lineages such as cartilage, bone, tendon, muscle, and nerve. Such multipotency has the potential to play an important role in the repair and reconstruction of multiple tissues across a number of orthopaedic specialties. Bone marrow and fat are the most abundant and accessible source of MSC's with bone marrow aspirate the most commonly being reported to stimulate healing., Methods: This review examines the current reported 20 Q2 clinical applications of bone marrow aspirate concentrate and its effectiveness., Results: The published studies reported techniques of collection and preparation of BMAC in addition to its applications in a number of orthopaedic sub-specialities. Studies could be sub-categorised into: techniques of extraction, processing and microscopic examination of BMAC (31), reconstruction of osseous defects/non-union (20), treatment of avascular necrosis (9), repair of cartilage defects (8), treatment of sports injuries and tendon injury/repair (9), injection in regenerative therapy (4), treatment of spine conditions (4) including enhancing postoperative fusion and degenerative disc pathology and orthopaedic oncology (4). A few published studies combined the use of platelet-rich plasma (PRP) with BMAC (4) or compared them in different applications (5)., Conclusions: BMAC has been used in bone, cartilage and tendon injuries with encouraging results., (© The Authors, published by EDP Sciences, 2017.)
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- 2017
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174. Bone Marrow Aspirate in the Treatment of Chondral Injuries.
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Holton J, Imam MA, and Snow M
- Abstract
The ability of mesenchymal stem cells (MSCs) to transdifferentiate into a desired cell lineage has captured the imagination of scientists and clinicians alike. The limited ability for chondrocytes to regenerate in chondral injuries has raised the concept of using MSCs to help regenerate and repair damaged tissue. The expansion of cells in a laboratory setting to be delivered back to the patient is too costly for clinical use in the present tough economic climate. This process is slow with due to the complexity of trying to imitate the natural environment and biological stimulation of chondral cell replication and proliferation. Bone marrow aspirate concentrate (BMAC) has the potential to provide an easily accessible and readily available source of MSCs with key growth factors that can be used in treating chondral injuries. This review summarizes the underlying basic science of MSCs and the therapeutic potential of BMAC.
- Published
- 2016
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175. Cementless Total Hip Replacement for the Management of Severe Developmental Dysplasia of the Hip in the Middle Eastern Population: A Prospective Analysis.
- Author
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Imam MA, Fathalla I, Holton J, Nabil M, and Kashif F
- Abstract
Introduction: In the Middle East, severe developmental dysplasia of the hip with subsequent high dislocation is often seen. We assessed the efficiency of total hip replacement (THR) with subtrochanteric shortening femoral osteotomy and trochanteric advancement in this population., Methods: This prospective study assessed 25 female patients with symptomatic and severe (Crowe IV). Pre- and postoperative Harris hip score (HHS) and Oxford hip score (OHS) were performed alongside assessment of leg length discrepancy (LLD) and the ability to sit in a cross-legged position., Results: The mean HHS and OHS improved pre-operatively at 1 and 10 years, respectively (p-value < 0.001). The mean postoperative LLD was 3 mm (0-8 mm). Functionally, 22/25 patients were able to sit cross-legged. None of the 25 hips underwent revision during this period., Conclusion: Total hip replacement with subtrochanteric shortening osteotomy in combination with trochanteric advancement is sufficient for the management of Crowe type IV hips in this population.
- Published
- 2016
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176. Can a total knee arthroplasty be both rotationally unconstrained and anteroposteriorly stabilised? A pulsed fluoroscopic investigation.
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Scott G, Imam MA, Eifert A, Freeman MA, Pinskerova V, Field RE, Skinner J, and Banks SA
- Abstract
Objectives: Throughout the 20th Century, it has been postulated that the knee moves on the basis of a four-bar link mechanism composed of the cruciate ligaments, the femur and the tibia. As a consequence, the femur has been thought to roll back with flexion, and total knee arthroplasty (TKA) prostheses have been designed on this basis. Recent work, however, has proposed that at a position of between 0° and 120° the medial femoral condyle does not move anteroposteriorly whereas the lateral femoral condyle tends, but is not obliged, to roll back - a combination of movements which equates to tibial internal/ femoral external rotation with flexion. The aim of this paper was to assess if the articular geometry of the GMK Sphere TKA could recreate the natural knee movements in situ/in vivo., Methods: The pattern of knee movement was studied in 15 patients (six male: nine female; one male with bilateral TKAs) with 16 GMK Sphere implants, at a mean age of 66 years (53 to 76) with a mean BMI of 30 kg/m(2) (20 to 35). The motions of all 16 knees were observed using pulsed fluoroscopy during a number of weight-bearing and non-weight-bearing static and dynamic activities., Results: During maximally flexed kneeling and lunging activities, the mean tibial internal rotation was 8° (standard deviation (sd) 6). At a mean 112° flexion (sd 16) during lunging, the medial and lateral condyles were a mean of 2 mm (sd 3) and 8 mm (sd 4) posterior to a transverse line passing through the centre of the medial tibial concavity. With a mean flexion of 117° (sd 14) during kneeling, the medial and lateral condyles were a mean of 1 mm (sd 4) anterior and 6 mm (sd 4) posterior to the same line. During dynamic stair and pivoting activities, there was a mean anteroposterior translation of 0 mm to 2 mm of the medial femoral condyle. Backward lateral condylar translation occurred and was linearly related to tibial rotation., Conclusion: The GMK Sphere TKA in our study group shows movements similar in pattern, although reduced in magnitude, to those in recent reports relating to normal knees during several activities. Specifically, little or no translation of the medial femoral condyle was observed during flexion, but there was posterior roll-back of the lateral femoral condyle, equating to tibiofemoral rotation. We conclude that the GMK Sphere is anteroposteriorly stable medially and permits rotation about the medial compartment.Cite this article: Professor G. Scott. Can a total knee arthroplasty be both rotationally unconstrained and anteroposteriorly stabilised?: A pulsed fluoroscopic investigation. Bone Joint Res 2016;5:80-86. DOI: 10.1302/2046-3758.53.2000621., (© 2016 Scott et al.)
- Published
- 2016
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177. Outcomes following arthroscopic transosseous equivalent suture bridge double row rotator cuff repair: a prospective study and short-term results.
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Imam MA and Abdelkafy A
- Abstract
Background: The transosseous-equivalent cross bridge double row (TESBDR) rotator cuff (RC) repair technique has been developed to optimize healing biology at a repaired RC tendon insertion. It has been shown in the laboratory to improve pressurized contact area and mean foot print pressure when compared with a double row anchor technique. Pressure has been shown to influence healing between tendon and bone, and the tendon compression vector provided by the transosseous-equivalent suture bridges may enhance healing. The purpose was to prospectively evaluate the outcomes of arthroscopic TESBDR RC repair., Methods: Single center prospective case series study. Sixty-nine patients were selected to undergo arthroscopic TESBDR RC repair and were included in the current study. Primary outcome measures included the Oxford Shoulder Score (OSS), the University of California, Los Angeles (UCLA) score, the Constant-Murley (CM) Score and Range of motion (ROM). Secondary outcome measures included a Visual Analogue Scale (VAS) for pain, another VAS for patient satisfaction from the operative procedure, EuroQoL 5-Dimensions Questionnaire (EQ-5D) for quality of life assessment., Results: At 24 months post-operative, average OSS score was 44, average UCLA score was 31, average CM score was 88, average forward flexion was 145°, average internal rotation was 35°, average external rotation was 79°, average abduction was 150°, average EQ-5D score was 0.73, average VAS for pain was 2.3, and average VAS for patient satisfaction was 9.2., Conclusion: Arthroscopic TESBDR RC repair is a procedure with good post-operative functional outcome and low re-tear rate based on a short term follow-up.
- Published
- 2016
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178. Useful Functional Outcome Can Be Achieved After Motor Nerve Transfers in Management of the Paralytic Hand. An Observational Study.
- Author
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Sallam AA, El-Deeb MS, and Imam MA
- Abstract
Background: Nerve transfers have demonstrated encouraging outcomes in peripheral nerve reconstructions compared with the conventional direct repair or grafting., Questions/purposes: We aimed to identify whether the patient's demographics, delay to surgery, degree of loss of grip and pinch strengths, mechanism of injury, and compliance to hand therapy have an impact on the functional outcome of motor nerve transfers in patients with paralytic hand., Methods: Fifty-five patients with a mean age of 31.05 (18-48) years with complete isolated high injuries of radial, ulnar, and median nerves, who underwent motor nerve transfers, were reviewed. The outcome was assessed using the Medical Research Council (MRC) scale and measurement of grip and pinch strengths of the hand at minimum 1-year follow-up (mean of 14.4 (12-18) months). Patient's age and gender, delay to surgery, body mass index (BMI), degree of loss of grip and pinch strengths, educational level, occupation, mechanism of injury, and compliance to hand therapy were analyzed to determine their impact on the extent of recovery of hand function., Results: Forty of fifty five (72.73%) patients regained useful functional recovery (M3-M4) with satisfactory grip hand functions. Worse motor recovery was observed in older ages, delayed surgical intervention, higher BMI, and greater postoperative loss of grip and pinch strengths in comparison to the healthy opposite hand. Better outcomes are significantly associated with higher educational level and postoperative compliance to hand therapy. Contrarily, there was no significant association between gender, occupation, mechanism of injury, and achievement of useful functional recovery., Conclusions: Successful nerve transfers are expected with experienced skilled surgeons. However, outstanding outcomes are not the standard, with about one fourth failing to achieve M3 grade. The educational level, hand dominance, compliance to hand therapy, loss of grip and pinch strengths, age, injury-surgery interval, and BMI are possible predictors of patients' outcome.
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- 2016
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179. Introducing a proforma to improve clinical care in trauma surgery.
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Hussien AS, Imam MA, Elsherbiny M, and Ellahee N
- Subjects
- England, Hospitals, General, Humans, Prospective Studies, Surgical Procedures, Operative, Documentation standards, Patient Care standards, Quality Improvement, Wounds and Injuries surgery
- Abstract
Introduction: Accurate trauma operative details are an important part of the care of trauma patients. This study evaluated the adequacy of handwritten operative notes for trauma patients and whether they comply with the standards set by the Royal College of Surgeons of England for optimizing clinical practice in a busy district general hospital., Patients and Methods: Fifty consecutive sets of handwritten trauma operative notes were reviewed prospectively. A standardized printed proforma was introduced and then another 50 consecutive sets of notes were reviewed. The results were analysed using the Student t-test to obtain two-tailed P values comparing the mean difference between percentages of missing data for both cycles., Results: Out of 24 parameters examined, 19 showed improvement after introducing the standardized proforma in trauma surgical notes. There was an overall significant improvement in the studied parameters (P= 0.0134), with a mean difference of 19.3% of missing data for both cycles., Conclusions: These results suggest that a standardized prestructured operative note proforma in trauma surgery is a useful tool in recording the operative data, thus helping to improve the medical care provided. It would also provide medicolegally sound evidence of a procedure when needed and so be more beneficial for the surgeon if routinely used. The authors recommend its regular use in different surgical specialties.
- Published
- 2015
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180. Does bone debris in anterior cruciate ligament reconstruction really matter? A cohort study of a protocol for bone debris debridement.
- Author
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Imam MA, Abdelkafy A, Dinah F, and Adhikari A
- Abstract
Background: The purpose of the current study was to determine whether a systematic five-step protocol for debridement and evacuation of bone debris during anterior cruciate ligament reconstruction (ACLR) reduces the presence of such debris on post-operative radiographs., Methods: A five-step protocol for removal of bone debris during arthroscopic assisted ACLR was designed. It was applied to 60 patients undergoing ACLR (Group 1), and high-quality digital radiographs were taken post-operatively in each case to assess for the presence of intra-articular bone debris. A control group of 60 consecutive patients in whom no specific bone debris protocol was applied (Group 2) and their post-operative radiographs were also checked for the presence of intra-articular bone debris., Results: In Group 1, only 15% of post-operative radiographs showed residual bone debris, compared to 69% in Group 2 (p < 0.001)., Conclusion: A five-step systematic protocol for bone debris removal during arthroscopic assisted ACLR resulted in a significant decrease in residual bone debris seen on high-quality post-operative radiographs.
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- 2015
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181. A minimum three-year clinical and radiological follow up of the utilisation of a Cementless Multihole Mega cups in conversion hip arthroplasty--a prospective analysis.
- Author
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Nabil M, Mathana A, and Imam MA
- Subjects
- Aged, Female, Hip Prosthesis, Humans, Male, Middle Aged, Prospective Studies, Prosthesis Design, Treatment Outcome, Arthroplasty, Replacement, Hip, Hemiarthroplasty
- Abstract
Unlabelled: The introduction of multihole mega cup has proposed innovative answers in the management of acetabular impediments that ensued from the use of bipolar hemiarthroplasty. This study bestows a prospective analysis of the outcome of conversion surgery from bipolar hemiarthroplasty to total hip replacement in patients with acetabular complications.Forty-two patients, 22 men and 20 women, with a mean age of 59 years (range 46-69 years) who experienced complex acetabular deficiencies following bipolar hemiarthroplasty, were converted to total hip replacement between January 2008 and June 2010. Pain was the main complaint in all cases. It was primarily confined to the groin region. Limping due to shortening of the affected limb was the second main complaint (30 cases). All cases had erosion of the acetabulum with varying degrees of protrusion. Cementless mutihole cups with augmentation by autogenous bone graft from the iliac crest and large metal heads' sizes were used for conversion in all cases. After a minimum follow-up of 36 months, Harris hip scores (HHS) improved from a mean of 36.8±6.8 (range 21-59) preoperatively to a mean of 85.9±5.6 (range 71 to 94) postoperatively. Thirty six (85.7%) patients experienced no groin pain postoperatively while six patients (14.3%) described limited improvement. Postoperative complications included: dislocation in two cases which were reduced and did not result in a poor outcome later on. No patients were lost to follow-up., Conclusions: Short-term results at minimum three years follow-up of multihole mega cup were encouraging regarding high capability of acetabular reconstruction with less morbidity of recipient site. Significant pain and functional improvement were noticeable, however further longer term studies are consequently recommended.
- Published
- 2015
182. Antegrade-retrograde opposing lag screws for internal fixation of simple displaced talar neck fractures.
- Author
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Abdelkafy A, Imam MA, Sokkar S, and Hirschmann M
- Subjects
- Adult, Female, Humans, Male, Middle Aged, Osteotomy, Retrospective Studies, Talus diagnostic imaging, Talus injuries, Tomography, X-Ray Computed, Bone Screws, Fracture Fixation, Internal methods, Fractures, Bone surgery, Talus surgery
- Abstract
The talar neck is deviated medially with reference to the long axis of the body of the talus. In addition, it deviates plantarward. The talar neck fracture line is sometimes observed to be oriented obliquely (not perpendicular to the long axis of the talar neck). This occurs when the medially deviated talar neck strikes the horizontally oriented anterior lower tibial edge. Internal fixation of a simple displaced talar neck fracture usually requires 2 lag screws. Because the fracture line is obliquely oriented, a better method for positioning the screws perpendicular to the fracture line is to place them in a reversed direction to provide maximum interfragmentary compression at the fracture site, which could increase the likelihood of absolute stability with subsequent improvement in the incidence of fracture union and a reduction of complications, such as avascular necrosis of the body of the talus. Two lag screws are used, with the first inserted from posteriorly to anteriorly (perpendicular to the fracture line) using a medial approach after medial malleolar chevron osteotomy. The second screw is inserted from anteriorly to posteriorly (perpendicular to the fracture line) using an anterolateral approach. Both screw heads should be countersunk. A series of 8 patients underwent this form of internal fixation for talar neck fracture repair, with satisfactory functional outcomes. In conclusion, the use of antegrade-retrograde opposing lag screws is a reasonable method of internal fixation for simple displaced talar neck fractures., (Copyright © 2015 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.)
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- 2015
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183. Loss to follow-up after total hip replacement: a source of bias in patient reported outcome measures and registry datasets?
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Imam MA, Barke S, Stafford GH, Parkin D, and Field RE
- Subjects
- Adult, Age Factors, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Surveys and Questionnaires, Time Factors, Arthroplasty, Replacement, Hip, Bias, Lost to Follow-Up, Patient Outcome Assessment, Patient Satisfaction, Registries
- Abstract
Patient reported outcome measures (PROMs) are used to gauge clinical performance. The PROMs outcome programme at our centre achieves a preoperative data capture rate of 99%. This falls to 90.6%, 89%, 83% and 79% at the six-week, six-month, one-year and two-year time points, respectively. The study aims were to determine factors associated with patients who did not respond to outcome questionnaires following total hip replacement (THR), and the potential implications this may have when assessing patients following THRs. During the first year of the PROMs programme, 1,322 patients underwent unilateral primary THR at our institution. Of these, 1,311 completed preoperative questionnaires. Thirty-eight patients (2.9%) died within two years of surgery and have been excluded. For the remaining 1,273 patients, we identified those who did not return postoperative questionnaires at each of our review time points. Younger age, lower baseline EQ5D and Oxford Hip scores (OHS) were significantly associated with non-response (p<0.001). Patients with lower satisfaction scores, OHS and EQ5D scores, were less likely to respond to subsequent questionnaires. A significant association between non-response and deprivation (p<0.001) was demonstrated. Our findings suggest that the more satisfied patients are over-represented and our reported outcome results are better than they would have been if all patients had responded. This phenomenon may apply to studies where those categorised as "lost to follow-up" represent a subset of patients who have disengaged due to poor outcome or satisfaction.
- Published
- 2014
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184. Quality of life in patients with major depressive disorder.
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Imam MA, Salam MA, Algin S, and Ali M
- Subjects
- Adult, Analysis of Variance, Bangladesh epidemiology, Cross-Sectional Studies, Depressive Disorder, Major epidemiology, Female, Humans, Male, Psychiatric Status Rating Scales, Severity of Illness Index, Surveys and Questionnaires, Depressive Disorder, Major psychology, Quality of Life
- Abstract
This descriptive, cross sectional, comparative and analytical study assessed the quality of life of major depressive patients and healthy controls. It was carried out in the department of psychiatry of Bangabandhu Sheikh Mujib Medical University (BSMMU) on patients of major depressive disorder according to structured clinical interview (SCID and diagnostic and statistical Manual) (DSM-IV) criteria. The study used world health organization quality of life scale (WHO QoL -BREF) Bangla version to assess QoL of major depressive patients. The study assessed eighty patients of major depressive disorder who were recruited purposively from the Department of Psychiatry, BSMMU who were above the age of 18 years irrespective of sex. Same number of age, sex matched hospital staff of different strata of the BSMMU were included in this study. The study shows that the all parameters of quality of life scales in patients (mean±SD) were Overall health (case 2.20±0.77 & control 3.79±0.52), Physical (case 2.77±0.383 & control 3.44±0.322), Psychological (case 2.53±0.353 & control 3.51±0.382), Social (case 2.88±0.65 & control 3.85±0.543), Environmental (case 2.87±0.533 & control 3.27±0.514) and overall quality of life (case 1.94±0.817 & control 3.71±0.556) which major depressive disorder were significantly reduced.
- Published
- 2013
185. Strengthened lithium for x-ray blast windows.
- Author
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Pereira NR and Imam MA
- Abstract
Lithium's high x-ray transparency makes it an attractive material for windows intended to protect soft x-ray diagnostics in high energy density experiments. Pure lithium is soft and weak, but lithium mixed with lithium hydride powder becomes harder and stronger, in principle without any additional x-ray absorption. A comparison with the standard material for x-ray windows, beryllium, suggests that lithium or lithium strengthened by lithium hydride may well be an excellent option for such windows.
- Published
- 2008
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186. System for continuous production of nanophase materials using a microwave-driven polyol process.
- Author
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Gold SH, Bruce RW, Fliflet AW, Lewis D 3rd, Kurihara LK, and Imam MA
- Abstract
A prototype system is described for the large scale, continuous production of nanophase metals, metal oxides, and other nanophase materials using the polyol process. The polyol process employs an organic solvent such as ethylene glycol to reduce a metal oxide/metal salt at high temperature to the metal oxide or metal. The system employs a 6 kW, 2.45 GHz microwave source to rapidly heat the continuously flowing solution to a desired process temperature as it flows through a silica tube placed along the center line of a section of waveguide.
- Published
- 2007
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187. Artifacts introduced by ion milling in Al-Li-Cu alloys.
- Author
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Singh AK, Imam MA, and Sadananda K
- Subjects
- Aluminum, Copper, Lithium, Reproducibility of Results, Alloys, Microscopy, Electron methods, Specimen Handling methods
- Abstract
Ion milling is commonly used to prepare specimens for observation under transmission electron microscope (TEM). This technique sometimes introduces artifacts in specimens contributing to misleading interpretation of TEM results as observed in the present investigation of Al-Li-Cu alloys. This type of alloy, in general, contains several kinds of precipitates, namely delta', T1, and theta'. It is found that ion milling even for a short time produces drastic changes in the precipitate characteristics as compared to standard electropolishing methods of specimen preparation for TEM. Careful analysis of selected area diffraction patterns and micrographs shows that after ion milling delta' precipitates are very irregular, whereas other precipitates coarsen and they are surrounded by misfit dislocations. In situ hot-stage TEM experiments were performed to relate the microstructure to that observed in the ion-milled specimen. Results and causes of ion milling effects on the microstructure are discussed in relation to standard electropolishing techniques and in situ hot-stage experiment.
- Published
- 1988
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