Publications by authors named "Hassanin Alkaduhimi"

10 Publications

  • Page 1 of 1

Greater tuberosity fractures are not a continuation of Hill-Sachs lesions, but do they have a similar etiology?

JSES Int 2022 May 12;6(3):396-400. Epub 2022 Jan 12.

Shoulder and Elbow Unit, Joint Research, OLVG, Amsterdam, the Netherlands.

Background: It is unclear whether greater tuberosity fractures (GTF) in the setting of a shoulder dislocation are due to an avulsion of the rotator cuff or a result of an extensive Hill-Sachs lesion (HSL). To explore whether these lesions have similar etiology, the primary aim of this study is to compare the postinjury morphology of the proximal humerus after GTF and HSL.

Methods: Computed tomography scans of 19 patients with HSL and 18 patients with GTF after first-time shoulder dislocations were analyzed. We assessed the location by measuring height in relation to the highest point of the humerus and angles for the origin (most medial point of lesion), center, and endpoint (most lateral point of lesion) between GTF and HSL and the bicipital groove. For both GTF and HSL, we assessed whether infraspinatus and supraspinatus insertions were involved and whether they were off-track or on-track.

Results: Measured from the bicipital groove, HSLs and GTFs have different origins (153˚ vs. 110˚;  < .0001, respectively), centers (125˚ vs. 60˚;  < .0001, respectively), and endpoints (92˚ vs. 37˚;  < .0001, respectively). HSLs had a higher position (0.76 cm vs. 1.71 cm;  < .0001), involved the supraspinatus footprint less often (16% vs. 72%;  = .0008), and were less likely to be off-track (31% vs. 94%;  = .0002). Half of the GTF were on the lateral side of the glenoid track and thus extra-capsular, versus 0% of HSL.

Conclusion: HSLs and GTFs have different anatomical characteristics and thus GTFs are likely to be distinct from extensive HSLs.
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May 2022

The Outcomes of Soft-Tissue Repair for Posterior Shoulder Instability Surgery.

Arch Bone Jt Surg 2022 Jan;10(1):45-51

Massachusetts General Hospital, Orthopaedic Sports Department, Harvard Medical School, Boston, Massachusetts, U.S.A.

Background: This study aimed to assess the results after soft-tissue posterior instability surgery and address possible challenges during these operations.

Methods: The databases of two tertiary hospitals were reviewed to identify patients treated for posterior shoulder instability between 2000 and 2015. Out of 198 treated patients, 19 cases underwent surgery with a mean follow-up of 35 months. Chart review was performed to obtain recurrence rates, revision rates, return to sport, persistent pain, subjective instability, subjective feeling of being better, complications, and range of motion after operative treatment of posterior shoulder instability. These outcomes were compared using the Fisher's exact and Mann-Whitney U tests.

Results: After surgery, 6 (32%) patients had a recurrent subluxation, and 11 (58%) cases had persistent pain; moreover, 5 (26%) patients had a persistent feeling of instability, and 10 (53%) cases did not feel improvement after the operation. Furthermore, 10 (53%) patients required a revision, and there were 7 (37%) cases with a complication. Postoperatively, 75% of the patients had a full forward flexion, and 93% of the cases had full internal rotation; however, 64% of them had restrictions in external rotation.

Conclusion: There is a high rate of recurrent instability, need for revision, and complications after soft-tissue posterior instability surgery. Postoperative external rotation was impaired in most patients. Patients should be informed about these unsatisfactory results.
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January 2022

High Variability of the Definition of Recurrent Glenohumeral Instability: An Analysis of the Current Literature by a Systematic Review.

Arthrosc Sports Med Rehabil 2021 Jun 6;3(3):e951-e966. Epub 2021 Apr 6.

Shoulder and Elbow Unit, Joint Research, Amsterdam, the Netherlands.

Purpose: To determine the definitions for recurrence used in the literature, assess the consensus in using these definitions, and determine the impact of these definitions on recurrence rates.

Methods: A literature search was performed in PubMed and EMBASE including studies from 2000 to 2020 reporting on recurrence rates after anterior arthroscopic shoulder instability surgery. Dislocation, apprehension, subluxation and recurrence rates were compared.

Results: Ninety-one studies were included. In 68% of the eligible studies, recurrence rates are not well defined. Thirty (33%) studies did not report on dislocations, 45 (49%) did not report on subluxations, and 58 (64%) did not report on apprehension. Seventeen different definitions for recurrence of instability, 4 definitions of dislocations, and 8 definitions of subluxation were used.

Conclusion: Recurrence rates are poorly specified and likely underreported in the literature, hampering comparison with results of other studies. This highlights the need for a consensus on definition of recurrence across shoulder instability studies. We recommend not using the definition recurrence of instability anymore. We endorse defining dislocations as a radiographically confirmed dislocation or a dislocation that is manually reduced, subluxations as the feeling of a dislocation that can be (spontaneously) reduced without the need for a radiographically confirmed dislocation, and a positive apprehension sign as fear of imminent dislocation when placing the arm in abduction and external rotation during physical examination. Reporting on the events resulting in a dislocation or subluxation aids in making an estimation of the severity of instability.

Level Of Evidence: Level IV, systematic review.
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June 2021

Interobserver agreement for detecting Hill-Sachs lesions on magnetic resonance imaging.

Clin Shoulder Elb 2021 06 27;24(2):98-105. Epub 2021 May 27.

Shoulder and Elbow Unit, Joint Research, OLVG Hospital, Amsterdam, Netherlands.

Background: Our aim is to determine the interobserver reliability for surgeons to detect Hill-Sachs lesions on magnetic resonance imaging (MRI), the certainty of judgement, and the effects of surgeon characteristics on agreement.

Methods: Twenty-nine patients with Hill-Sachs lesions or other lesions with a similar appearance on MRIs were presented to 20 surgeons without any patient characteristics. The surgeons answered questions on the presence of Hill-Sachs lesions and the certainty of diagnosis. Interobserver agreement was assessed using the Fleiss' kappa (κ) and percentage of agreement. Agreement between surgeons was compared using a technique similar to the pairwise t-test for means, based on large-sample linear approximation of Fleiss' kappa, with Bonferroni correction.

Results: The agreement between surgeons in detecting Hill-Sachs lesions on MRI was fair (69% agreement; κ, 0.304; p<0.001). In 84% of the cases, surgeons were certain or highly certain about the presence of a Hill-Sachs lesion.

Conclusions: Although surgeons reported high levels of certainty for their ability to detect Hill-Sachs lesions, there was only a fair amount of agreement between surgeons in detecting Hill-Sachs lesions on MRI. This indicates that clear criteria for defining Hill-Sachs lesions are lacking, which hampers accurate diagnosis and can compromise treatment.
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June 2021

Radial nerve palsy associated with closed humeral shaft fractures: a systematic review of 1758 patients.

Arch Orthop Trauma Surg 2021 Apr 13;141(4):561-568. Epub 2020 Apr 13.

Department of Orthopaedic Surgery, Onze Lieve Vrouwe Gasthuis, 1091, Amsterdam, The Netherlands.

Background And Purpose: Humeral shaft fractures are often associated with radial nerve palsy (RNP) (8-16%). The primary aim of this systematic review was to assess the incidence of primary and secondary RNP in closed humeral shaft fractures. The secondary aim was to compare the recovery rate of primary RNP and the incidence of secondary RNP between operative and non-operative treatment.

Methods: A systematic literature search was performed in 'Trip Database', 'Embase' and 'PubMed' to identify original studies reporting on RNP in closed humeral shaft fractures. The Coleman Methodology Score was used to grade the quality of the studies. The incidence and recovery of RNP, fracture characteristics and treatment characteristics were extracted. Chi-square and Fisher exact tests were used to compare operative versus non-operative treatment.

Results: Forty studies reporting on 1758 patients with closed humeral shaft fractures were included. The incidence of primary RNP was 10%. There was no difference in the recovery rate of primary RNP when comparing operative treatment with radial nerve exploration (98%) versus non-operative treatment (91%) (p = 0.29). The incidence of secondary RNP after operative and non-operative treatment was 4% and 0.4%, respectively (p < 0.01).

Interpretation: One-in-ten patients with a closed humeral shaft fracture has an associated primary RNP, of which > 90% recovers without the need of (re-)intervention. No beneficial effect of early exploration on the recovery of primary RNP could be demonstrated when comparing patients managed non-operatively with those explored early. Patients managed operatively for closed humeral shaft fractures have a higher risk of developing secondary RNP.

Level Of Evidence: Level IV; Systematic Review.
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April 2021

Remplissage With Bankart Repair in Anterior Shoulder Instability: A Systematic Review of the Clinical and Cadaveric Literature.

Arthroscopy 2019 04;35(4):1257-1266

Shoulder and Elbow Unit, Joint Research, OLVG, Amsterdam, The Netherlands.

Purpose: To compare the clinical and biomechanical results of an arthroscopic Bankart repair alone with an arthroscopic Bankart repair combined with remplissage.

Methods: A literature search was performed on May 1, 2018, in PubMed and Embase for studies comparing an isolated arthroscopic Bankart repair and an arthroscopic Bankart repair with remplissage. The quality of the studies was assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach and the Cochrane Risk of Bias in Non-randomized Studies of Interventions (ROBINS-I) checklist. Results regarding failures, biomechanical properties, and shoulder function were extracted.

Results: We included 13 studies (6 clinical and 7 biomechanical studies), and their overall quality was very low to low. In the biomechanical studies, adding a remplissage to the Bankart repair prevented engagement in all cadavers, resulted in more stiffness, and impaired the range of motion. Among clinical studies, all reported lower recurrence rates and most showed better shoulder function after a Bankart repair with remplissage compared with an isolated Bankart repair. The return-to-sport rates were mostly similar, whereas the loss of range of motion was often higher after a Bankart repair with remplissage.

Conclusions: The addition of a remplissage procedure to a Bankart repair for managing small to medium Hill-Sachs lesions might be beneficial in reducing the risk of recurrent instability and improving shoulder function, without increasing the risk of complications.

Level Of Evidence: Level III, systematic review of Level II and III studies.
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April 2019

An assessment of quality of randomized controlled trials in shoulder instability surgery using a modification of the clear CLEAR-NPT score.

Shoulder Elbow 2018 Oct 31;10(4):238-249. Epub 2018 Jan 31.

Shoulder and Elbow Unit, Joint Research, OLVG, Amsterdam, The Netherlands.

Background: The present study aimed to evaluate the methodological quality and determine the quality of reporting of randomized controlled trials (RCTs) that assess surgical treatment for shoulder instability.

Methods: A Cochrane, Pubmed, EMBASE and Trip database search was performed, including the relevant literature, regarding RCTs that report on shoulder instability published between January 1994 and January 2017. Methodological quality was assessed with a modification of the Checklist to Evaluate A Report of a Nonpharmacologic Trial (CLEAR-NPT). Points were assigned based on 18 items regarding patient characteristics, randomization, care provider characteristics, surgical details and blinding, with a total score ranging from 0 points to 18 points. Missing items were verified with the corresponding authors of the studies. Quality of reporting corresponds to the total scores including the items that were additionally provided by the authors.

Results: We included 22 studies. Of these, nine corresponding authors provided additional information. The average methodological quality was 16.9 points (11 studies) and the average quality of reporting was 9.5 points (22 studies). Items scoring worst included information regarding the surgeon's experience, the patients' level of activity, comorbidities, analyzing according to 'intention-to-treat' principles, and blinding of care providers, participants and assessors.

Conclusions: RCTs reporting on shoulder instability surgery are well performed but poorly reported.
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October 2018

Are collision athletes at a higher risk of re-dislocation after an open Bristow-Latarjet procedure? A systematic review and meta-analysis.

Shoulder Elbow 2018 Apr 11;10(2):75-86. Epub 2017 Sep 11.

2Onze lieve Vrouwe Gasthuis Amsterdam, Orthopaedic Research Center, Amsterdam, The Netherlands.

Background: The primary aim of the present study was to review, summarize and compare the redislocation risk for collision athletes and noncollision athletes after an open Bristow-Latarjet procedure. Our secondary aim was to summarize return to sport, satisfaction, pain and complications.

Methods: We conducted a systematic review in PubMed and EMBASE of articles until 1 July 2016. We included all studies describing Bristow-Latarjet like procedures as a result of glenohumeral instability, mentioning redislocation rates in collision athletes with >2 years of follow-up. We pooled the data using random-effects meta-analysis for redislocation risk-differences (RD) between collision and noncollision athletes, and assessed heterogeneity with and Tau tests.

Results: From 475 titles and abstracts, 11 studies were included and eight studies were meta-analyzed. The pooled RD to develop a postoperative redislocation between collision athletes and noncollision athletes was -0.00 (95% confidence interval: -0.03 to 0.03,  = 0.370). Return to sports rates were high (67-100%), and patients reported high satisfaction scores (93-100% satisfied) and low pain scores (mean visual analogue scale score of 1.6); however, postoperative complication rates varied from 0.8% to 19.2%.

Conclusions: Collision athletes are not more at risk for redislocation rates after an open Bristow-Latarjet procedure compared to noncollision athletes. Overall postoperative outcomes were good, although numerous complications occurred.
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April 2018

Step-by-Step Technique for Segmental Reconstruction of Reverse Hill-Sachs Lesions Using Homologous Osteochondral Allograft.

Tech Hand Up Extrem Surg 2017 Jun;21(2):60-66

Shoulder and Elbow Unit, Onze lieve Vrouwe Gasthuis, Amsterdam, The Netherlands.

Posterior shoulder dislocations are accompanied by high forces and can result in an anteromedial humeral head impression fracture called a reverse Hill-Sachs lesion. This reverse Hill-Sachs lesion can result in serious complications including posttraumatic osteoarthritis, posterior dislocations, osteonecrosis, persistent joint stiffness, and loss of shoulder function. Treatment is challenging and depends on the amount of bone loss. Several techniques have been reported to describe the surgical treatment of lesions larger than 20%. However, there is still limited evidence with regard to the optimal procedure. Favorable results have been reported by performing segmental reconstruction of the reverse Hill-Sachs lesion with bone allograft. Although the procedure of segmental reconstruction has been used in several studies, its technique has not yet been well described in detail. In this report we propose a step-by-step description of the technique how to perform a segmental reconstruction of a reverse Hill-Sachs defect.
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June 2017

Redislocation risk after an arthroscopic Bankart procedure in collision athletes: a systematic review.

J Shoulder Elbow Surg 2016 Sep;25(9):1549-58

Shoulder and Elbow Unit, Joint Research, Department of Orthopaedic Surgery OLVG, Amsterdam, The Netherlands.

Background: The purpose of this review was to determine the redislocation risk for collision athletes after an arthroscopic Bankart repair and to compare the redislocation rate between collision athletes and noncollision athletes after an arthroscopic Bankart repair.

Methods: A PubMed and Embase query was performed, screening all relevant literature of arthroscopic Bankart procedures mentioning redislocation rates in collision athletes. Studies with a follow-up <2 years or lacking information on redislocation rates in collision athletes were excluded. We used the modified Coleman Methodology Score to assess the quality of included studies. Finally, the data in all the studies were combined and analyzed.

Results: There were 1012 studies screened on title and abstract, of which 111 studies were full-text screened, and finally 20 studies were included. Four studies reported on collision athletes only, whereas 16 compared collision with noncollision athletes. Fourteen studies reported increased redislocation rates for collision athletes in comparison to noncollision athletes (absolute risk difference varying from 0.4% to 28.6%), whereas 2 studies reported decreased rates (absolute risk differences of -6% and -2.4%). A combined analysis revealed that collision athletes have an increased absolute risk of 8.09 with 95% CI from 3.61 to 12.57% for development of postoperative instability in comparison to noncollision athletes (P = .001).

Conclusion: Collision athletes have an increased risk for redislocation in comparison to noncollision athletes after an arthroscopic Bankart repair, although there were no differences in return to sport.
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September 2016