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https://www.readbyqxmd.com/read/28819606/intra-articular-loose-body-with-concomitant-bankart-lesion-after-a-traumatic-shoulder-dislocation-a-case-report
#1
Jason B T Lim, Andrew H C Tan
INTRODUCTION: The spectrum of pathoanatomic lesions encountered in anterior shoulder dislocation is broad. There could be a presence of loose bodies, chondral and osteochondral, in the shoulder joint and also concomitant rotator cuff partial tears resulting from acute and chronic shoulder instability. CASE REPORT: We present one case report of a 46-year-old male Chinese with an uncommon case of Bankart lesion, with a full thickness chondral defect over the superior glenoid articular surface manifesting as a large intra-articular loose cartilaginous body...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28811043/treatment-of-the-fixation-surface-improves-glenoid-prosthesis-longevity-in-vitro
#2
Sarah Junaid, Sanjay Sanghavi, Carolyn Anglin, Anthony Bull, Roger Emery, Andrew A Amis, Ulrich Hansen
Many commercial cemented glenoid components claim superior fixation designs and increased survivability. However, both research and clinical studies have shown conflicting results and it is unclear whether these design variations do improve loosening rates. Part of the difficulty in investigating fixation failure is the inability to directly observe the fixation interface, a problem addressed in this study by using a novel experimental set-up. Cyclic loading-displacement tests were carried out on 60 custom-made glenoid prostheses implanted into a bone substitute...
July 22, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28796543/metal-artifact-reduction-for-orthopedic-implants-o-mar-usefulness-in-ct-evaluation-of-reverse-total-shoulder-arthroplasty
#3
Euddeum Shim, Yusuhn Kang, Joong Mo Ahn, Eugene Lee, Joon Woo Lee, Joo Han Oh, Heung Sik Kang
OBJECTIVE: The objective of this study is to evaluate the effect of the metal artifact reduction algorithm for orthopedic implants (O-MAR) on CT image quality for patients with reverse total shoulder arthroplasty (RTSA), with emphasis placed on the evaluation of bone in the vicinity of prostheses. MATERIALS AND METHODS: Sixty-five patients who underwent CT scanning after RTSA were enrolled in the study. Two radiologists analyzed the images reconstructed with filtered back projection (FBP) with or without O-MAR processing...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28795073/biomechanical-comparison-of-a-first-and-a-second-generation-all-soft-suture-glenoid-anchor
#4
John Erickson, Frank Chiarappa, Jonathan Haskel, Justin Rice, Adam Hyatt, James Monica, Aman Dhawan
BACKGROUND: All-soft tissue suture anchors provide advantages of decreased removal of bone and decreased glenoid volume occupied compared with traditional tap or screw-in suture anchors. Previous published data have led to biomechanical concerns with the use of first-generation all-soft suture anchors. PURPOSE/HYPOTHESIS: The purpose of this study was to evaluate the load to 2-mm displacement and ultimate load to failure of a second-generation all-soft suture anchor, compared with a first-generation anchor and a traditional PEEK (polyether ether ketone) anchor...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28794582/what-are-the-anatomical-predictive-factors-of-degenerative-superior-labrum-anterior-to-posterior-lesion-in-rotator-cuff-tear
#5
Joong-Bae Seo, Jae-Sung Yoo, Joon-Yeul Lee, Kyoo-Hong Han
The purpose of this study was to evaluate the influence of anatomical factors degenerative superior labrum anterior to posterior lesion in rotator cuff tear. The study included 421 middle-aged patients treated using arthroscopic surgery for rotator cuff tears. Patients were divided into two groups based on the superior labrum anterior-to-posterior (SLAP). Glenoid inclination, glenoid length, humeral head diameter, acromio-humeral distance (AHD) head-glenoid difference (HGD), head glenoid angle (HGA), size and retraction of rotator cuff tears were evaluated in both groups...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28782076/shoulder-arthroplasty-in-patients-with-osteo-chondrodysplasias
#6
Bradley Schoch, Jean-David Werthel, Joaquin Sanchez-Sotelo, John W Sperling, Robert H Cofield, Mark Morrey
PURPOSE: Osteo-chondrodysplasias are a rare cause of limb malalignment, deformity and degenerative joint disease. Earlier in life, deformities may be managed with bony realignment and soft tissue releases; however, as degenerative changes progress, arthroplasty may be considered. There are limited reports examining shoulder arthroplasty in this population. This study aims to assess pain relief, function, and re-operation rate of shoulder arthroplasty in patients with osteo-chondrodysplasias...
August 7, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28779796/editorial-commentary-more-evidence-of-the-importance-of-the-glenoid-labrum-magnetic-resonance-imaging-reveals-its-possibility-to-increase-both-version-and-diameter-of-the-glenoid
#7
EDITORIAL
Jüri-Toomas Kartus
An intact glenoid labrum has the possibility to increase both the version and the diameter of the glenoid, thus theoretically reducing the risk of instability.
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28777666/shoulder-bone-geometry-affects-the-active-and-passive-axial-rotational-range-of-the-glenohumeral-joint
#8
Alexander Humphries, Srdjan Cirovic, Aliah F Shaheen
BACKGROUND: The range of motion of the glenohumeral joint varies substantially among individuals and is dependent on humeral position. How variation in shape of the humerus and scapula affects shoulder axial range of motion at various positions has not been established. PURPOSE: To quantify variation in the shape of the glenohumeral joint and investigate whether the scapula and humerus geometries affect the axial rotational range of the glenohumeral joint. STUDY DESIGN: Descriptive laboratory study...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28777216/posterior-shoulder-instability
#9
Alaina Brelin, Jonathan F Dickens
Posterior shoulder instability is a relatively uncommon condition, occurring in ∼10% of those with shoulder instability. Because of the rarity of the condition and the lack of knowledge in treatment, it is often misdiagnosed or patients experience a delay in diagnosis. Posterior instability typically affects athletes participating in contact or overhead sports and is usually the result of repetitive microtrauma or blunt force with the shoulder in the provocative position of flexion, adduction, and internal rotation, leading to recurrent subluxation events...
September 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/28777215/bone-loss-and-glenohumeral-instability
#10
David J Tennent, Michael A Donohue, Matthew A Posner
Glenohumeral instability secondary to glenohumeral bone loss presents a complex problem to the treating surgeon because of the complex biomechanics of the glenohumeral joint and its reliance on numerous dynamic and static stabilizers. The role of glenoid bone loss, specifically inferior-anterior glenoid bone loss, has been well characterized in the setting of recurrent unidirectional instability with greatly improved clinical results when following an algorithmic reconstructive approach to the location and percentage of overall bone loss...
September 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/28777214/recurrent-shoulder-instability-after-primary-bankart-repair
#11
Michael A Donohue, Timothy C Mauntel, Jonathan F Dickens
The glenohumeral joint is one of the most frequently dislocated joints and occurs with increasing frequency in collision and contact athletes, especially those in sports that repeatedly place the glenohumeral joint in a position of vulnerability. Nonoperative management of shoulder instability especially in young contact athletes results in unacceptably high recurrence rates; thus, early surgical stabilization has become commonplace. Surgical stabilization typically yields acceptable outcomes. However, recurrent anterior instability may occur following a previous stabilization procedure at rates of 7% to 12%...
September 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/28777213/glenohumeral-instability-related-to-special-conditions-slap-tears-pan-labral-tears-and-multidirectional-instability
#12
Gregory S Van Blarcum, Steven J Svoboda
Glenohumeral instability is one of the more common conditions seen by sports medicine physicians, especially in young, active athletes. The associated anatomy of the glenohumeral joint (the shallow nature of the glenoid and the increased motion it allows) make the shoulder more prone to instability events as compared with other joints. Although traumatic dislocations or instability events associated with acute labral tears (ie, Bankart lesions) are well described in the literature, there exists other special shoulder conditions that are also associated with shoulder instability: superior labrum anterior/posterior (SLAP) tears, pan-labral tears, and multidirectional instability...
September 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/28776109/clinical-and-radiological-results-7%C3%A2-years-after-copeland-shoulder-resurfacing-arthroplasty-in-patients-with-primary-glenohumeral-osteoarthritis-an-independent-multicentre-retrospective-study
#13
F U Verstraelen, L A Horta, M G M Schotanus, N P Kort, S K Samijo, E J P Jansen
PURPOSE: The aim of this multicentre cohort study was to evaluate the midterm outcomes and survival after cementless stemless resurfacing arthroplasty (CSRA) in a series of 33 shoulders in 27 patients with primary osteoarthritis. METHODS: Clinical outcome assessment included: Constant-Murley score (CMS); Simple Shoulder Test (SST); Disability of Arm, Shoulder, Hand (DASH); EuroQol-5D (EQ-5D) utility scores; Numerous Rating Scale (NRS) for pain. Radiographs were assessed by two independent observers for oversizing, radiolucency, glenohumeral subluxation, glenoid erosion and subsidence...
August 3, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28774693/characterizing-the-skull-base-in-craniofacial-microsomia-using-principal-component-analysis
#14
S C Schaal, C Ruff, B I Pluijmers, E Pauws, C W N Looman, M J Koudstaal, D J Dunaway
The aim of this study was to compare the anatomical differences in the skull base between the affected and non-affected side in patients with craniofacial microsomia (CFM), and to compare the affected and non-affected sides with measurements from a normal population. Three-dimensional computed tomography scans of 13 patients with unilateral CFM and 19 normal patients (age range 7-12 years) were marked manually with reliable homologous landmarks. Principal component analysis (PCA), as part of a point distribution model (PDM), was used to analyse the variability within the normal and preoperative CFM patient groups...
July 31, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28771373/biomechanical-evaluation-of-glenoid-reconstruction-with-an-implant-free-j-bone-graft-for-anterior-glenoid-bone-loss
#15
Leo Pauzenberger, Felix Dyrna, Elifho Obopilwe, Philipp R Heuberer, Robert A Arciero, Werner Anderl, Augustus D Mazzocca
BACKGROUND: The anatomic restoration of glenoid morphology with an implant-free J-shaped iliac crest bone graft offers an alternative to currently widely used glenoid reconstruction techniques. No biomechanical data on the J-bone grafting technique are currently available. PURPOSE: To evaluate (1) glenohumeral contact patterns, (2) graft fixation under cyclic loading, and (3) the initial stabilizing effect of anatomic glenoid reconstruction with the implant-free J-bone grafting technique...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28765871/biometric-sex-estimation-using-the-scapula-and-clavicle-in-a-modern-greek-population
#16
Aimilia E Koukiasa, Constantine Eliopoulos, Sotiris K Manolis
Human skeletal remains exhibit sexual dimorphism, which is apparent in adult living individuals as well. Researchers from forensic and osteoarchaeological fields have a growing interest in establishing metric standards for sexing by use of discriminant function analysis. The present study focuses on providing sex estimation metric standards using measurements from the scapula and clavicle in a Modern Greek sample (Athens Collection) consisting of 107 male and 90 female skeletons. A total of seven measurements were taken: maximum scapular height and breadth, glenoid cavity height and breadth, maximum clavicular length, anterior and superior clavicular diameter...
August 1, 2017: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
https://www.readbyqxmd.com/read/28763415/clinical-and-radiographic-outcomes-of-the-ream-and-run-procedure-for-primary-glenohumeral-arthritis
#17
Jeremy S Somerson, Moni B Neradilek, Benjamin C Service, Jason E Hsu, Stacy M Russ, Frederick A Matsen
BACKGROUND: The ream-and-run procedure can provide improvement in shoulder function and comfort for selected patients with primary glenohumeral arthritis who wish to avoid a prosthetic glenoid component. The purpose of this study was to evaluate factors associated with medialization of the humeral head after this procedure as well as the relationship of medialization to the clinical outcome. METHODS: We collected patient, shoulder, and procedure characteristics along with Simple Shoulder Test (SST) scores before surgery and at the time of follow-up...
August 2, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28762021/retroverted-glenoid-reconstruction-using-glenoid-plate-in-reverse-shoulder-arthroplasty
#18
R Lanzone, S Carbone, P Albino, J-B Cassio, P Métais
PURPOSE: The objective of this study is to evaluate the clinical and radiological results of reverse shoulder arthroplasty (RSA) with glenoid plating in a consecutive series of patients affected by cuff tear glenohumeral arthropathy with glenoid retroversion >15°. We hypothesized that autologous humeral head graft may be better stabilized between the baseplate and the native glenoid surface with the use of a glenoid plate. METHODS: Twenty consecutive patients affected by cuff tear arthropathy with glenoid retroversion >15° (B2 or C according to Walch classification) were enrolled in this study...
July 31, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28756567/growth-plate-injury-at-the-base-of-the-coracoid-mri-features
#19
Erin FitzGerald Alaia, Zehava Sadka Rosenberg, Ignacio Rossi, Jonathan Zember, Johannes B Roedl, Lynne Pinkney, Lynne S Steinbach
PURPOSE: To assess the MRI features of growth plate injury at the base of the coracoid process. MATERIALS AND METHODS: Subjects were identified through retrospective search of our department imaging database and teaching files and the teaching files of two outside academic institutions. The coracoid base growth plate was examined with attention to widening, irregularity, abnormal signal intensity of the growth plate, and the presence of adjacent soft tissue edema...
July 29, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28751094/revision-of-failed-shoulder-hemiarthroplasty-to-reverse-total-arthroplasty-analysis-of-157-revision-implants
#20
Giovanni Merolla, Eric Wagner, John W Sperling, Paolo Paladini, Elisabetta Fabbri, Giuseppe Porcellini
BACKGROUND: There remains a paucity of studies examining the conversion of failed hemiarthroplasty (HA) to reverse total shoulder arthroplasty (RTSA). Therefore, the purpose of this study was to examine a large series of revision HA to RTSA. METHODS: A population of 157 patients who underwent conversion of a failed HA to a revision RTSA from 2006 through 2014 were included. The mean follow-up was 49 months (range, 24-121 months). The indications for revision surgery included instability with rotator cuff insufficiency (n = 127) and glenoid wear (n = 30); instability and glenoid wear were associated in 38 cases...
July 24, 2017: Journal of Shoulder and Elbow Surgery
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