Publications by authors named "Elhassan B"

Background: Painful degeneration of the sternoclavicular joint refractory to nonoperative treatment has historically been managed with resection of the degenerative segment of the medial clavicle. Although this has produced good results with improvement in symptoms, recurrent pain necessitating revision surgery is not an infrequently encountered outcome. To reduce the occurrence of recurrent postoperative pain, a novel technique to reconstruct the intra-articular disc at the time of medial clavicle resection was developed.

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Introduction: Shoulder and elbow surgery fellowships in the United States are recognized for their academic emphasis, yet the correlation between an applicant's research productivity and fellowship match results remains unclear. This study (1) analyzed temporal trends in research productivity among matched fellowship applicants, (2) evaluated the influence of quantity of publications and first authorships on match positions, and (3) investigated program variations in research productivity.

Methods: This is a retrospective analysis of data from the San Francisco (SF) Match Database for shoulder and elbow surgery applicants matched between 2017 and 2024.

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Background: Lower trapezius tendon (LTT) transfer has demonstrated promising results for patients with posterosuperior irreparable rotator cuff tears (PSIRCTs). However, there has been no study evaluating return to work (RTW) and return to sports (RTS) after LTT transfer.

Purpose/hypothesis: The purpose of this study was to assess the rates of RTW and RTS and identify associated factors among patients who have undergone LTT transfer for PSIRCTs.

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Background: Adult traumatic brachial plexus injuries (BPIs) present a significant medical challenge, potentially leading to life-altering consequences for patients' upper extremity pain and function. However, the psychological impact on patients has not been extensively studied.

Methods: Adult patients with traumatic BPIs treated at 2 tertiary referral centers in the United States from 2015 to 2019 were retrospectively identified.

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Article Synopsis
  • The study investigates the risk of 30-day complications after total shoulder arthroplasty (TSA) in older patients, specifically those aged 80 and over, using a national database from 2011 to 2020.
  • Among the 33,089 patients analyzed, octogenarians (80-89 years) experienced 8% complication rates and nonagenarians (90 years and above) had 16%, compared to just 4% in patients under 80.
  • The findings highlight the increased odds of complications and readmission for elderly patients, which is essential for preoperative counseling and decision-making regarding TSA.
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Background: Shoulder fusion after nerve injury can improve overall arm function; however, high revision and low patient satisfaction rates have been described. The purpose of this study is to describe a 2-stage shoulder fusion, first pinning in a position of function and then converting to a shoulder fusion. Our hypothesis is that temporary pinning improves overall satisfaction after shoulder fusion in comparison to satisfaction reported in the literature.

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Background: Despite the established importance of the United States Medical License Exam (USMLE) and Alpha Omega Alpha (AOA) status in orthopedic residency selection, their significance in the fellowship match remains unknown. This study evaluates the influence of USMLE scores and AOA status on interview invitation rates and match positions for shoulder and elbow surgery fellowship applicants.

Methods: This is a retrospective analysis of data from the San Francisco Match database from 2018 to 2023.

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The term "dyskinesia" has often been used interchangeably with "winging," leading to ambiguity in the literature. To address this, the broader term "scapulothoracic abnormal motion (STAM)" was introduced to describe any abnormal position or movement of the scapula on the chest, resulting in pain and dysfunction. Scapulothoracic abnormal motion has a wide range of causes, including musculoskeletal imbalances such as pectoralis minor hyperactivity, neurological impairments such as long thoracic nerve palsy, and genetic conditions like facioscapulohumeral muscular dystrophy (FSHD).

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Article Synopsis
  • - This study compares three graft options— costo-osteochondral autograft, vascularized medial femoral trochlear autograft, and proximal hamate autograft—for reconstructing the nonunions of the proximal pole of the scaphoid bone.
  • - Researchers used wireless sensors on the wrist to analyze carpal kinematics through cyclical movements, testing each reconstruction condition to evaluate differences in joint motion.
  • - The findings indicate that there are no significant differences in the motion of two specific wrist joints (scapholunate and lunocapitate) during various wrist movements across the three graft types, suggesting minimal impact on carpal kinematics from the type of graft used.
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Rotator cuff pathology is the main cause of shoulder pain and dysfunction in older adults. When a rotator cuff tear involves the subscapularis tendon, the symptoms are usually more severe and the prognosis after surgery must be guarded. Isolated subscapularis tears represent 18% of all rotator cuff tears and arthroscopic repair is a good alternative primary treatment.

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Background: Brachial plexus catheter placement at the interscalene level is beneficial for shoulder analgesia but presents logistical challenges due to the superficial nature of the plexus at this level, increased patient movement in the neck, and therefore higher likelihood for catheter dislodgement.

Methods: Patients requiring shoulder arthroscopy and suprascapular nerve decompression were identified. Under arthroscopic guidance, a catheter was placed percutaneously into the scalene medius muscle next to the suprascapular nerve and the upper trunk of the brachial plexus.

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Background: In young patients with irreparable subscapularis deficiency (SSC-D) and absence of severe osteoarthritis, anterior latissimus dorsi transfer (aLDT) has been proposed as a treatment option to restore the anteroposterior muscular force couple to regain sufficient shoulder function. However, evidence regarding the biomechanical effect of an aLDT on glenohumeral kinematics remains sparse.

Purpose/hypothesis: The purpose of this study was to investigate the effects of an aLDT on range of glenohumeral abduction motion, superior migration of the humeral head (SM), and cumulative deltoid force (cDF) in a simulated SSC-D model using a dynamic shoulder model.

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Article Synopsis
  • The study aimed to investigate whether a single intra-articular corticosteroid injection affects the development of post-traumatic osteoarthritis and joint space width in patients with distal radius fractures (DRF).
  • Forty patients were randomly assigned to receive either dexamethasone or a saline placebo shortly after their fracture, with follow-up assessments for joint space and other wrist function metrics at various intervals over two years.
  • Results showed no significant differences in joint space width or functional outcomes between the corticosteroid and placebo groups at the 2-year mark, indicating corticosteroid injections may not impact osteoarthritis development after DRF.
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Article Synopsis
  • * Identifying the cause of shoulder issues, such as muscle paralysis or overactivity, requires specific diagnostic strategies and imaging techniques.
  • * A thorough physical examination is essential for accurately diagnosing and treating scapular problems, especially in patients with conditions like Ehlers-Danlos syndrome.
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A comprehensive review of scapular pathologies and their effect on shoulder function is necessary to determine the best treatment options. The coordinated motion between the scapulothoracic and glenohumeral joints is essential for shoulder motion and depends on the balanced activity of the periscapular muscles. Disruption in these muscles can cause abnormal scapular motion and compensatory glenohumeral movements, leading to misdiagnosis or delayed diagnosis.

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The bony shoulder girdle consists of the clavicle, humerus, and scapula, which work synergistically to form a complex articulation that is essential for use of the upper extremity. The shoulder girdle is the most common location for primary and secondary bone tumors in the upper extremity, and following resection of these tumors, reconstruction of the upper extremity is challenging. Compared with those in the lower extremity, reconstructive techniques in the upper extremity have historically been unreliable and fraught with complications and poor functional outcomes.

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Background: The best course of action for massive irreparable rotator cuff tears (MIRCTs) is not universally agreed upon. Numerous surgical techniques have been discussed. The implantation of a biodegradable spacer into the subacromial area has been documented since 2012 by several authors.

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Background: Lower trapezius transfer (LTT) has been proposed for restoring the anteroposterior muscular force couple in the setting of an irreparable posterosuperior rotator cuff tear (PSRCT). Adequate graft tensioning during surgery may be a factor critical for sufficient restoration of shoulder kinematics and functional improvement.

Purpose/hypothesis: The purpose was to evaluate the effect of tensioning during LTT on glenohumeral kinematics using a dynamic shoulder model.

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Muscle tendon transfers around the shoulder involve transferring the tendon of a well-functioning muscle-tendon unit to the site of damaged muscle-tendon insertion. In turn, this restores function and strength of the injured shoulder muscle through dynamic muscular contraction and a tenodesis effect. Rehabilitation after shoulder muscle tendon transfers requires extensive and lengthy rehabilitation to achieve satisfactory clinical outcomes.

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Teres major (TM) and latissimus dorsi (LD) ruptures are relatively rare in the general population and have primarily been observed in overhead throwing athletes. Although the gold standard of care has traditionally been nonoperative, surgical repair of TM and LD tendon ruptures has become increasingly prevalent in high-level athletes who fail to return to play. Literature is scarce regarding operative repair of these tendon ruptures.

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Background: Scapulothoracic (ST) fusion for facioscapulohumeral muscular dystrophy (FSHD) is an established treatment that corrects scapular instability, although it has high reported complication rates. The purpose of our study was to characterize the outcomes of ST fusion for FSHD in a large patient cohort and compare the outcomes based on bone graft type and fixation technique. Our hypothesis was that union rates would not differ by bone graft type during ST fusion.

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Background: Management of combined persistent anterior glenoid bone deficiency with irreparable subscapularis tear can be very complicated and challenging especially if associated with arthritis. The objective of this study was to report the outcome of combined reconstruction of the anterior glenoid with bone autograft or allograft with additional anterior latissimus transfer to reconstruct irreparable subscapularis tear with or without humeral head replacement.

Methods: Nineteen patients (average age 29 years old) who underwent open anterior glenoid bone reconstruction with iliac crest bone autograft or ostechondral bone allograft (distal tibia or glenoid allograft), with anterior latissimus transfer to reconstruct irreparable subscapularis tear with or without humeral head replacement were included in this study.

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