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Shoulder retroversion

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https://www.readbyqxmd.com/read/29759906/determining-glenoid-component-version-after-total-shoulder-arthroplasty
#1
Manish P Mehta, Laura A Vogel, Brian B Shiu, Elizabeth R Dennis, Djuro Petkovic, William N Levine, Charles M Jobin
BACKGROUND: Glenoid component loosening after total shoulder arthroplasty (TSA) may occur if retroversion is not corrected to <10°. However, accurately measuring postoperative glenoid component version has been difficult without postoperative computed tomography (CT), adding cost and radiation exposure outside of the standard radiographic follow-up. We present a new method to assess glenoid component version after TSA using only routine preoperative CT and postoperative radiographs (x-rays)...
May 11, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29730137/differentiation-of-bony-and-soft-tissue-adaptations-of-the-shoulder-in-professional-baseball-pitchers
#2
Katherine E Reuther, Scott Sheridan, Stephen J Thomas
BACKGROUND: Baseball pitching places tremendous forces on the arm, which may lead to structural tissue adaptations that are represented by changes in rotational range of motion (ROM). These adaptations often include both bony and soft tissue; however, the contribution of each tissue to the change in motion is not always clinically attainable. The purposes of this study were to determine the adaptations of ROM, bone, and soft tissue bilaterally and to examine the correlation between clinical ROM and humeral retroversion (HR)-corrected ROM...
May 2, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29695317/influence-of-joint-kinematics-on-polyethylene-wear-in-anatomic-shoulder-joint-arthroplasty
#3
Steffen Braun, Stefan Schroeder, Ulrike Mueller, Robert Sonntag, Matthias Buelhoff, Jan Philippe Kretzer
BACKGROUND: Despite the positive results in total shoulder arthroplasties (TSAs), a higher revision rate is documented compared with total hip and knee replacements. Wear is the possible main cause of TSA failure in the long-term. This study investigated the effect of joint kinematics and the influence of the rotator cuff on the polyethylene wear performance in an anatomic TSA. METHODS: Lifting a load of 2 kg with an abduction/adduction of 0° to 90° was simulated for 2 × 106 cycles as a primary motion using a fully kinematic joint simulator...
April 23, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29678037/semi-automatically-measuring-shoulders-range-of-motion-objective-measurements-with-good-reliability-and-accuracy
#4
Birgit Saalfeld, Ilonka Pingel, Klaus-Hendrik Wolf
The shoulder's range of motion (ROM) is an important measurement for the diagnostic process and course of treatment for patients with shoulder disorders or injuries. Visual estimation to assess a shoulder's ROM is a fast measuring method, and therefore routinely used in clinical practice. Studies already proved this method as very subjective and unreliable. Misestimating the severity of a patient's disability can lead to improper treatment and should be avoided. Modern technology may help measuring the ROM more reliable, objective, non-invasive and still fast...
2018: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/29664870/outcomes-of-anatomic-total-shoulder-arthroplasty-with-b2-glenoids-a-systematic-review
#5
Colten Luedke, Michael J Kissenberth, Stefan J Tolan, Richard J Hawkins, John M Tokish
BACKGROUND: Total shoulder arthroplasty remains an effective procedure for shoulder pain relief. Despite the negative effect of abnormal glenoid morphology and specifically retroverted and posteriorly subluxated glenoids, there is no consensus for management of B2 glenoids in total shoulder arthroplasty. The purpose of this study was to compare the outcomes and complication rates for B2 glenoid techniques so as to provide a baseline understanding of the current state of treatment of this pathology...
April 17, 2018: JBJS Reviews
https://www.readbyqxmd.com/read/29621028/risk-of-perforation-is-high-during-corrective-reaming-of-retroverted-glenoids-a-computer-simulation-study
#6
Alexander W Aleem, Nathan D Orvets, Brendan C Patterson, Aaron M Chamberlain, Jay D Keener
BACKGROUND: Corrective anterior reaming is an accepted method for addressing retroversion in a biconcave retroverted (Walch classification, type B2) glenoid in anatomic total shoulder arthroplasty. However, concern still exists regarding early glenoid component failure in the setting of severe retroversion, which may be related to loss of component containment and/or violation of subchondral bone resulting from reaming. The goal of this study was to determine what characteristics of B2 glenoids are less amenable to corrective reaming by virtually implanting anatomic glenoid components...
April 6, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29516162/replacement-options-for-the-b2-glenoid-in-osteoarthritis-of-the-shoulder-a-biomechanical-study
#7
Boris Sowa, Martin Bochenek, Steffen Braun, Felix Zeifang, Jan Philippe Kretzer, Thomas Bruckner, Gilles Walch, Patric Raiss
BACKGROUND: Glenoid replacement in cases of severe glenoid retroversion (RV) or eccentric wear is challenging. The aim of this study was to evaluate different treatment methods under standardized conditions to assist surgeons in the decision-making process. METHODS: Three treatment options for severe glenoid RV (15°) were compared: (1) no RV correction; (2) complete RV correction; (3) no RV correction and implantation of a posterior augmented glenoid (PAG). A highly standardized implantation protocol using artificial glenoid bones (five per group) was chosen, and a physiologic shoulder movement was applied in a biomechanical setting...
March 7, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29509615/the-association-between-rotator-cuff-muscle-fatty-infiltration-and-glenoid-morphology-in-glenohumeral-osteoarthritis
#8
Kenneth W Donohue, Eric T Ricchetti, Jason C Ho, Joseph P Iannotti
BACKGROUND: Glenoid morphology and rotator cuff muscle quality are important anatomic factors that can impact longevity of the glenoid component following total shoulder arthroplasty (TSA). We hypothesized that rotator cuff muscle fatty infiltration is associated with increased pathologic glenoid bone loss in glenohumeral osteoarthritis (OA). METHODS: We retrospectively reviewed 190 preoperative computed tomography (CT) scans of 175 patients (mean age, 66 years; range, 44 to 90 years) who underwent TSA for the treatment of primary glenohumeral OA...
March 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29501223/total-shoulder-arthroplasty-in-patients-with-a-b2-glenoid-addressed-with-corrective-reaming
#9
Nathan D Orvets, Aaron M Chamberlain, Brendan M Patterson, Peter N Chalmers, Michelle Gosselin, Dane Salazar, Alexander W Aleem, Jay D Keener
BACKGROUND: This study describes the short-term functional and radiographic outcomes after total shoulder arthroplasty (TSA) in shoulders with a B2 glenoid deformity addressed with corrective reaming. METHODS: We conducted a retrospective series of consecutive patients who underwent TSA with a Walch B2 glenoid quantified by computed tomography scan. All glenoid deformities were addressed using partially corrective glenoid reaming. Radiographic and functional outcome measures, including scores on the visual analog scale for pain, American Shoulder and Elbow Standardized Shoulder Assessment, and Simple Shoulder Test were collected...
February 28, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29490601/posterior-shoulder-tightness-to-treat-or-not-to-treat
#10
Kevin Hall, John D Borstad
Shoulder pain is a common musculoskeletal complaint that is difficult to treat because of the biomechanical complexity of the shoulder region, the interplay between mobility and stability, and the vital role played by the shoulder in moving, positioning, and providing stability for hand function. Despite advances in biomechanics and pain science, there is still much to learn about how impairments influence shoulder function and health. One impairment, posterior shoulder tightness (PST), is often noted in individuals with shoulder pain and consequently has generated much discussion and debate in recent years...
March 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29426742/sequential-3-dimensional-computed-tomography-analysis-of-implant-position-following-total-shoulder-arthroplasty
#11
Eric T Ricchetti, Bong-Jae Jun, Richard A Cain, Ari Youderian, Eric J Rodriguez, David Kusin, Naveen Subhas, Thomas E Patterson, Joseph P Iannotti
BACKGROUND: Detection of postoperative component position and implant shift following total shoulder arthroplasty (TSA) can be challenging using routine imaging. The purpose of this study was to evaluate glenoid component position over time using 3-dimensional computed tomography (CT) analysis with minimum 2-year follow-up. METHODS: Twenty patients underwent primary TSA with sequential CT scanning of the shoulder: a preoperative study, an immediate postoperative study within 2 weeks of surgery, and a postoperative study performed at minimum 2-year follow-up (CT3)...
February 7, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29399452/reverse-total-shoulder-arthroplasty-with-humeral-head-autograft-fixed-onto-glenoid-for-treatment-of-severe-glenoid-retroversion
#12
Zaamin B Hussain, Jonathan A Godin, George Sanchez, Nicholas I Kennedy, Mark E Cinque, Márcio B Ferrari, Matthew T Provencher
Advanced glenohumeral osteoarthritis can transform glenoid morphology and, in some cases, is found in association with severe glenoid retroversion. The associated glenoid retroversion leads to difficulty in fixation of the glenoid component in reverse total shoulder arthroplasty. In the context of extreme glenoid wear, structural grafts can be used to restore glenoid volume and version in order for the glenoid component of the reverse total shoulder arthroplasty to be more easily implanted. Nevertheless, literature regarding structural grafts remains limited, with optimal graft choice and technique still controversial at best...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29373297/humeral-retroversion-and-capsule-thickening-in-the-overhead-throwing-athlete-a-systematic-review
#13
REVIEW
Jeffrey Kay, Jacob M Kirsch, Neil Bakshi, Seper Ekhtiari, Nolan Horner, Mark Gichuru, Bashar Alolabi, Moin Khan, Asheesh Bedi
PURPOSE: To investigate the humeral and soft-tissue adaptations, including humeral retroversion, range of motion, and posterior capsule changes, in overhead throwing athletes. METHODS: We performed a systematic review in accordance with Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. PubMed, MEDLINE, CENTRAL (Cochrane Central Register of Controlled Trials), and Embase were searched from January 1, 2011, through April 23, 2017, by 2 reviewers independently and in duplicate...
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29332666/optimizing-reverse-shoulder-arthroplasty-component-position-in-the-setting-of-advanced-arthritis-with-posterior-glenoid-erosion-a-computer-enhanced-range-of-motion-analysis
#14
Jay D Keener, Brendan M Patterson, Nathan Orvets, Alexander W Aleem, Aaron M Chamberlain
BACKGROUND: Our study purpose was to determine the optimal glenoid and humeral reverse shoulder arthroplasty (RSA) component design and position in osteoarthritic shoulders with severe glenoid retroversion deformities. METHODS: Computed tomography scans from 10 subjects were analyzed with advanced software including RSA range of motion (ROM) analysis. Variables included glenoid component retroversion of 0°, 5°, 10°, 15°, and 20° and baseplate lateralization of 0, 5, and 10 mm...
February 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29305619/-torsional-malalignment-of-the-humerus
#15
REVIEW
N Hawi, S Razaeian, C Krettek, R Meller, E Liodakis
The torsion of the humerus describes the physiological rotation of the humerus around its longitudinal axis. Various clinical and radiological methods for measurement have been described. The computed tomography method is currently the gold standard. The angle between the humeral head axis and the transepicondylar axis is measured. This angle is called retroversion. Values of retroversion vary between 10° and 40°. For the treatment of many humeral pathologies, a precise reconstruction of the anatomical retroversion is required...
March 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29244705/arthroscopic-repair-of-recurrent-posterior-shoulder-subluxation-after-total-shoulder-arthroplasty-a-case-report
#16
Ricardo Grieshaber-Bouyer, Christian Gerber
CASE: A 53-year-old man presented with osteoarthritis (Walch biconcave [B2] glenoid retroversion, 22°; glenohumeral subluxation index, 65%) and a partial rupture of the supraspinatus tendon in the left shoulder. Following anatomic total joint replacement, he developed disabling recurrent posterior subluxation despite a stable prosthesis and a correctly centered glenoid head, as observed with postoperative radiography and computed tomography. In order to avoid bone loss and the complications associated with revision arthroplasty, we performed arthroscopic reefing of the posterior capsule as an experimental minimally invasive treatment...
July 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29201309/little-leaguer-s-shoulder-can-cause-severe-three-dimensional-humeral-deformity
#17
Yuji Hosokawa, Teruhisa Mihata, Yasuo Itami, Masashi Neo, Munekazu Doi
We analyzed three-dimensional (3D) humeral deformity (valgus-varus, flexion-extension, and rotational deformation) after little leaguer's shoulder using 3D computed tomography in a 15-year-old male baseball player. Humeral retroversion was increased by 27.1° on the dominant side compared with the nondominant side. Compared with the nondominant shaft, the dominant humeral shaft was deformed in the varus direction (9.4°), resulting in a decreased neck-shaft angle (dominant side, 127.5°; nondominant side, 135...
December 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/29155311/glenoid-exposure-in-total-shoulder-arthroplasty
#18
REVIEW
L Nové-Josserand, P Clavert
Glenoid exposure is agreed to be a difficult step, but is also a key step in total shoulder arthroplasty, both anatomic and reverse. It conditions unhindered use of the ancillary instrumentation and thus correct glenoid component positioning. The main stages comprise arthrotomy, by opening the rotator cuff, humeral head cut, and inferior glenohumeral release, enabling shifting of the humerus and good exposure of the glenoid cavity. The two main approaches are deltopectoral and anterosuperior transdeltoid. Using the deltopectoral approach, arthrotomy is performed through the subscapularis muscle, by various techniques...
February 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28965996/three-dimensional-assessment-of-the-normal-japanese-glenoid-and-comparison-with-the-normal-french-glenoid
#19
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 compared 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)...
December 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28965687/walch-b0-glenoid-pre-osteoarthritic-posterior-subluxation-of-the-humeral-head
#20
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...
January 2018: Journal of Shoulder and Elbow Surgery
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