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https://www.readbyqxmd.com/read/28965996/three-dimensional-assessment-of-the-normal-japanese-glenoid-and-comparison-with-the-normal-french-glenoid
#1
N Mizuno, S Nonaka, R Ozaki, M Yoshida, M Yoneda, G Walch
INTRODUCTION: In 2014, reverse total shoulder arthroplasty was approved in Japan. We were concerned that the base plate might be incompatible with Japanese who were generally smaller than Westerners. Therefore we investigated the dimensions and morphology of the normal Japanese glenoid and compare with the normal French glenoid. MATERIALS AND METHODS: One hundred Japanese shoulders without glenoid lesions (50 men and 50 women) were investigated and compared with 100 French shoulders (50 men and 50 women)...
September 28, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28965687/walch-b0-glenoid-pre-osteoarthritic-posterior-subluxation-of-the-humeral-head
#2
REVIEW
Peter Domos, Caio Santos Checchia, Gilles Walch
The management of primary osteoarthritis of the shoulder has been well investigated. However, the etiology and management of posterior humeral head subluxation in the context of primary glenohumeral osteoarthritis remain controversial. The finding of static posterior subluxation of the humeral head before the development of posterior bone erosion of the glenoid in young men with radiographic findings of primary osteoarthritis has been described as arthrogenic posterior subluxation of the humeral head. It demonstrates the earliest form of the osteoarthritic evolution, and an excessive glenoid retroversion is the only probable cause of this static subluxation, although this is controversial...
September 28, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28948516/version-correction-via-eccentric-reaming-compromises-remaining-bone-quality-in-b2-glenoids-a-computational-study
#3
Xiang Chen, Akhil S Reddy, Andreas Kontaxis, Daniel S Choi, Timothy Wright, David M Dines, Russell F Warren, Julien Berhouet, Lawrence V Gulotta
BACKGROUND: Version correction via eccentric reaming reduces clinically important retroversion in Walch type B2 glenoids (those with substantial glenoid retroversion and a second, sclerotic neoglenoid cavity) before total shoulder arthroplasty (TSA). Clinically, an increased risk of glenoid component loosening in B2 glenoids was hypothesized to be the result of compromised glenoid bone quality attributable to eccentric reaming. However, no established guidelines exist regarding how much version correction can be applied without compromising the quality of glenoid bone...
December 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28927670/patient-specific-instrumentation-for-total-shoulder-arthroplasty-not-as-accurate-as-it-would-seem
#4
Simon C Lau, Prue P A Keith
BACKGROUND: There is an increasing body of literature suggesting that the use of patient-specific instrumentation (PSI) in total shoulder arthroplasty (TSA) results in improved positioning of the glenoid component. The aim of this in vivo study was to assess the accuracy of PSI of the glenoid component in TSA in a consecutive series at a single center. METHODS: Eleven consecutive TSAs (7 TSAs and 4 reverse TSAs) were performed using custom-made patient-specific positioning guides for the glenoid component...
September 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28872528/quantitative-measurement-of-osseous-pathology-in-advanced-glenohumeral-osteoarthritis
#5
Joseph P Iannotti, Bong-Jae Jun, Thomas E Patterson, Eric T Ricchetti
BACKGROUND: Osteoarthritis of the glenohumeral joint has typical patterns of deformity as described by Walch et al. However, more severe glenoid pathology may be difficult to classify. The purpose of this study was to use 3-dimensional computed tomography (3-D CT) imaging analysis to define common pathologic subtypes that can be differentiated from the current Walch classification. METHODS: We performed quantitative measurements of premorbid and pathologic anatomy using preoperative 3-D CT scans from 155 cases of advanced glenohumeral osteoarthritis that underwent anatomic or reverse total shoulder arthroplasty...
September 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28866848/corr-insights-%C3%A2-does-postoperative-glenoid-retroversion-affect-the-2-year-clinical-and-radiographic-outcomes-for-total-shoulder-arthroplasty
#6
Michael Lawrence Pearl
No abstract text is available yet for this article.
November 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28777216/posterior-shoulder-instability
#7
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/28762021/retroverted-glenoid-reconstruction-using-glenoid-plate-in-reverse-shoulder-arthroplasty
#8
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/28735842/angled-bio-rsa-bony-increased-offset-reverse-shoulder-arthroplasty-a-solution-for-the-management-glenoid-bone-loss-and-erosion
#9
Pascal Boileau, Nicolas Morin-Salvo, Marc-Olivier Gauci, Brian L Seeto, Peter N Chalmers, Nicolas Holzer, Gilles Walch
BACKGROUND: Glenoid deficiency and erosion (excessive retroversion/inclination) must be corrected in reverse shoulder arthroplasty (RSA) to avoid prosthetic notching or instability and to maximize function, range of motion, and prosthesis longevity. This study reports the results of RSA with an angled, autologous glenoid graft harvested from the humerus (angled BIO-RSA). METHODS: A trapezoidal bone graft, harvested from the humerus and fixed with a long-post baseplate and screws, was used to compensate for residual glenoid bone loss/erosion...
July 20, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28689828/influence-of-humeral-head-material-on-wear-performance-in-anatomic-shoulder-joint-arthroplasty
#10
Ulrike Mueller, Steffen Braun, Stefan Schroeder, Mark Schroeder, Robert Sonntag, Sebastian Jaeger, Jan Philippe Kretzer
BACKGROUND: The number of total shoulder arthroplasties has increased in the past years, with encouraging results. However, the survival of anatomic total shoulder arthroplasty (aTSA) is lower compared with that of knee and hip replacements. Wear-associated problems like loosening are well-known causes of long-term failure of aTSA. The main purpose of this study was to investigate the wear behavior of ceramic-polyethylene bearings compared with the standard metal-polyethylene bearings...
July 6, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28681354/does-postoperative-glenoid-retroversion-affect-the-2-year-clinical-and-radiographic-outcomes-for-total-shoulder-arthroplasty
#11
Benjamin C Service, Jason E Hsu, Jeremy S Somerson, Stacy M Russ, Frederick A Matsen
BACKGROUND: While glenoid retroversion and posterior humeral head decentering are common preoperative features of severely arthritic glenohumeral joints, the relationship of postoperative glenoid component retroversion to the clinical results of total shoulder arthroplasty (TSA) is unclear. Studies have indicated concern for inferior outcomes when glenoid components are inserted in 15° or more retroversion. QUESTIONS/PURPOSES: In a population of patients undergoing TSA in whom no specific efforts were made to change the version of the glenoid, we asked whether at 2 years after surgery patients having glenoid components implanted in 15° or greater retroversion had (1) less improvement in the Simple Shoulder Test (SST) score and lower SST scores; (2) higher percentages of central peg lucency, higher Lazarus radiolucency grades, higher mean percentages of posterior decentering, and more frequent central peg perforation; or (3) a greater percentage having revision for glenoid component failure compared with patients with glenoid components implanted in less than 15° retroversion...
November 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28663399/prediction-of-the-pre-morbid-3d-anatomy-of-the-proximal-humerus-based-on-statistical-shape-modelling
#12
S Poltaretskyi, J Chaoui, M Mayya, C Hamitouche, M J Bercik, P Boileau, G Walch
AIMS: Restoring the pre-morbid anatomy of the proximal humerus is a goal of anatomical shoulder arthroplasty, but reliance is placed on the surgeon's experience and on anatomical estimations. The purpose of this study was to present a novel method, 'Statistical Shape Modelling', which accurately predicts the pre-morbid proximal humeral anatomy and calculates the 3D geometric parameters needed to restore normal anatomy in patients with severe degenerative osteoarthritis or a fracture of the proximal humerus...
July 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28567227/measurement-methods-for-humeral-retroversion-using-two-dimensional-computed-tomography-scans-which-is-most-concordant-with-the-standard-method
#13
Joo Han Oh, Woo Kim, Angel A Cayetano
BACKGROUND: Humeral retroversion is variable among individuals, and there are several measurement methods. This study was conducted to compare the concordance and reliability between the standard method and 5 other measurement methods on two-dimensional (2D) computed tomography (CT) scans. METHODS: CT scans from 21 patients who underwent shoulder arthroplasty (19 women and 2 men; mean age, 70.1 years [range, 42 to 81 years]) were analyzed. The elbow transepicondylar axis was used as a distal reference...
June 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28545718/the-effect-of-glenoid-component-version-and-humeral-polyethylene-liner-rotation-on-subluxation-and-impingement-in-reverse-shoulder-arthroplasty
#14
Vijay N Permeswaran, Andrea Caceres, Jessica E Goetz, Donald D Anderson, Carolyn M Hettrich
BACKGROUND: A previously validated finite element modeling approach was used to determine how changes in glenoid component version and polyethylene liner rotation within the humeral component affect the arm abduction angle at which impingement between the inferior glenoid and the polyethylene liner occurs as well as the amount of subluxation generated by that impingement. MATERIALS AND METHODS: Five glenoid component versions (5° anteversion; neutral; 5°, 10°, and 20° retroversion) and 7 polyethylene liner rotations (20° and 10° anterior; neutral; 10°, 20°, 30°, and 40° posterior) were considered, resulting in 35 different clinically representative models...
May 22, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28483434/posterior-glenoid-bone-grafting-in-total-shoulder-arthroplasty-for-osteoarthritis-with-severe-posterior-glenoid-wear
#15
Gregory P Nicholson, Gregory L Cvetanovich, Allison J Rao, Patrick O'Donnell
BACKGROUND: Total shoulder arthroplasty (TSA) in cases with posterior wear can be addressed by eccentric reaming of the anterior glenoid or by augmenting the posterior glenoid with bone grafting or augmented glenoid implants. We report the results of TSA with posterior glenoid bone grafting (PGBG) with humeral head autograft in patients with shoulder osteoarthritis and severe posterior glenoid wear. METHODS: A retrospective review of cases from 2004 to 2014 revealed 34 patients...
May 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28444541/reverse-shoulder-arthroplasty-for-massive-irreparable-rotator-cuff-tears-and-cuff-tear-arthropathy-a-systematic-review
#16
REVIEW
S Petrillo, U G Longo, R Papalia, V Denaro
PURPOSE: To report the outcomes and complications of reverse shoulder arthroplasty (RSA) in massive irreparable rotator cuff tears (MIRCT) and cuff tear arthropathy (CTA). METHODS: A systematic review of the literature contained in Medline, Cochrane, EMBASE, Google Scholar and Ovid databases was conducted on May 1, 2016, according to PRISMA guidelines. The key words "reverse total shoulder arthroplasty" or "reverse total shoulder prostheses" with "rotator cuff tears"; "failed rotator cuff surgery"; "massive rotator cuff tears"; "irreparable rotator cuff tears"; "cuff tear arthropathy"; "outcomes"; "complications" were matched...
August 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28412107/glenoid-morphology-in-obstetrical-brachial-plexus-lesion-a-three-dimensional-computed-tomography-study
#17
Lars H Frich, Pernille H Schmidt, Trine Torfing
BACKGROUND: Obstetric brachial plexus lesion (OBPL) frequently leads to glenohumeral dysplasia, and excessive retroversion of the glenoid is among the best known developmental disturbances. Most analyses of the glenoid are based on 2-dimensional (D) imaging and do not address glenoid inclination or provide information on the glenoid in the sagittal plane. We aim to describe the 3-D deformity of the glenoid in children with OBPL. METHODS: Preoperative computed tomography (CT) scans of the nonaffected and the affected scapula of 24 children (aged 5 to 12 years) with developmental disturbances after OBPL years were analyzed...
August 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28412061/influence-of-the-labrum-on-version-and-diameter-of-the-glenoid-a-morphometric-study-using-magnetic-resonance-images
#18
Joyce Anthony, Ibin Varughese, Vaida Glatt, Kevin Tetsworth, Erik Hohmann
PURPOSE: To use magnetic resonance imaging to determine the influence of the labrum on both the osseous version and effective diameter of the glenoid. METHODS: This was a retrospective, cross-sectional study of patients with shoulder pain who underwent MRI between February 2014 and February 2015. The morphology of the glenoid labrum and glenoid was scanned with a 3-T magnetic resonance imaging scanner, and variables were measured by use of IntelliSpace PACS Enterprise...
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28405221/assessment-of-the-restriction-of-arm-elevation-after-intramedullary-fixation-for-proximal-humeral-fractures
#19
Hiroaki Inui, Katsuya Nobuhara
BACKGROUND: Nail protrusion is suspected as a reason for the restriction of arm elevation after antegrade nailing of proximal humeral fractures, although assessment of the restriction of the glenohumeral joint during arm elevation has been insufficient. METHODS: In this retrospective study, 30 shoulders with proximal humeral fractures in 29 cases were treated with Polarus short nails (Acumed, Beaverton, OR, USA). At a mean final follow-up of 14 months, clinical outcomes, bony union, alignment including retroversion of the head and entry points of the nails were evaluated...
April 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28372968/interest-in-the-glenoid-hull-method-for-analyzing-humeral-subluxation-in-primary-glenohumeral-osteoarthritis
#20
Soufyane Bouacida, Marc-Olivier Gauci, Bertrand Coulet, Cyril Lazerges, Catherine Cyteval, Pascal Boileau, Michel Chammas
BACKGROUND: Posterior humeral subluxation is the main cause of failure of total shoulder arthroplasty. We aimed to compare humeral head subluxation in various reference planes and to search for a correlation with retroversion, inclination, and glenoid wear. MATERIALS AND METHODS: We included 109 computed tomography scans of primary glenohumeral osteoarthritis and 97 of shoulder problems unrelated to shoulder osteoarthritis (controls); all computed tomography scans were reconstructed in the anatomic scapular plane and the glenoid hull plane that we defined...
March 31, 2017: Journal of Shoulder and Elbow Surgery
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