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Reverse shoulder arthroplasty

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https://www.readbyqxmd.com/read/28094191/functional-results-of-bilateral-reverse-total-shoulder-arthroplasty
#1
Chris R Mellano, Robert Thorsness, Peter N Chalmers, Terrence F Feldheim, Patrick O'Donnell, Brian J Cole, Nikhil N Verma, Anthony A Romeo, Gregory P Nicholson
BACKGROUND: The purpose of this study was to analyze a population of patients with bilateral reverse total shoulder arthroplasty (RTSA) to evaluate their ability to perform activities of daily living and personal hygiene tasks. METHODS: At a minimum 2-year follow-up, we retrospectively reviewed 50 patients (100 shoulders) with a mean age of 72 years who underwent staged bilateral RTSA. The average follow-up period was 61 months (range, 24-121 months), with a minimum 2-year follow-up after the second surgical procedure...
January 13, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28089261/is-previous-nonarthroplasty-surgery-a-risk-factor-for-periprosthetic-infection-in-primary-shoulder-arthroplasty
#2
Jean-David Werthel, Taku Hatta, Bradley Schoch, Robert Cofield, John W Sperling, Bassem T Elhassan
BACKGROUND: The purpose of this study was to determine the risk of periprosthetic infection after primary shoulder arthroplasty (SA) in patients undergoing previous nonarthroplasty shoulder surgery compared with those without previous surgery. MATERIALS AND METHODS: All patients undergoing primary SA at our institution between 1970 and 2012 were included in this study. The cohort consisted of 4577 patients treated with 2890 total SAs, 1233 hemiarthroplasties, and 454 reverse SAs; 813 (18%) patients had undergone prior nonarthroplasty shoulder surgery on the operative side...
January 12, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28089256/a-comparative-analysis-of-work-related-outcomes-after-humeral-hemiarthroplasty-and-reverse-total-shoulder-arthroplasty
#3
Daniel J Hurwit, Joseph N Liu, Grant H Garcia, Gregory Mahony, Hao-Hua Wu, David M Dines, Russell F Warren, Lawrence V Gulotta
BACKGROUND: The return to work of young patients undergoing shoulder arthroplasty is increasingly important. Whereas studies have shown superior outcomes of reverse total shoulder arthroplasty (RTSA) compared with humeral hemiarthroplasty (HHA), no prior literature has compared RTSA with HHA in regard to return to work. METHODS: A retrospective review of a prospectively collected shoulder arthroplasty registry was performed to analyze all patients who underwent RTSA or HHA at a single institution...
January 11, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28087164/anatomic-study-and-electromyographic-analysis-of-the-teres-minor-muscle
#4
Junichiro Hamada, Akimoto Nimura, Kunio Yoshizaki, Keiichi Akita
BACKGROUND: The teres minor muscle is a focused topic on the treatment of massive rotator cuff tears and reverse total shoulder arthroplasty. Its precise anatomy and function have not been completely investigated. The purposes of this study were to anatomically investigate the muscle and analyze electromyographic (EMG) activities during shoulder motion. METHODS: This anatomic study used 20 shoulders from deceased donors (mean age, 75.0 years). EMG data were recorded from 10 healthy volunteers (mean age, 21...
January 10, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28078542/glenoid-baseplate-fixation-using-hybrid-configurations-of-locked-and-unlocked-peripheral-screws
#5
Nathan T Formaini, Nathan G Everding, Jonathan C Levy, Brandon G Santoni, Aniruddh N Nayak, Cooper Wilson
BACKGROUND: The use of peripheral locked screws has reduced glenoid baseplate failure rates in reverse shoulder arthroplasty. However, situations may arise when one or more non-locked screws may be preferred. We aimed to determine if different combinations of locked and non-locked screws significantly alter acute glenoid baseplate fixation in a laboratory setting. MATERIALS AND METHODS: Twenty-eight polyurethane trabecular bone surrogates were instrumented with a center screw-type glenoid baseplate and fixated with various combinations of peripheral locked and non-locked screws (1-, 2-, 3- and 4-locked con)...
January 11, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28068966/glenoid-morphology-in-light-of-anatomical-and-reverse-total-shoulder-arthroplasty-a-dissection-and-3d-ct-based-study-in-male-and-female-body-donors
#6
Sandra Mathews, Marco Burkhard, Nabil Serrano, Karl Link, Martin Häusler, Nakita Frater, Ingeborg Franke, Helena Bischofberger, Florian M Buck, Dominic Gascho, Michael Thali, Steffen Serowy, Magdalena Müller-Gerbl, Gareth Harper, Ford Qureshi, Thomas Böni, Hans-Rudolf Bloch, Oliver Ullrich, Frank-Jakobus Rühli, Elisabeth Eppler
BACKGROUND: Placement of the glenoid baseplate is of paramount importance for the outcome of anatomical and reverse total shoulder arthroplasty. However, the database around glenoid size is poor, particularly regarding small scapulae, for example, in women and smaller individuals, and is derived from different methodological approaches. In this multimodality cadaver study, we systematically examined the glenoid using morphological and 3D-CT measurements. METHODS: Measurements of the glenoid and drill hole tunnel length for superior baseplate screw placement were recorded to define size of the glenoid and the distance to the scapular notch on cadaveric specimens...
January 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28060054/patient-reported-and-objectively-measured-function-before-and-after-reverse-shoulder-arthroplasty
#7
Wendy J Hurd, Melissa M Morrow, Emily J Miller, Robert A Adams, John W Sperling, Kenton R Kaufman
BACKGROUND AND PURPOSE: Documenting functional outcomes after reverse shoulder arthroplasty (RSA) is critical to advancing patient care. The interplay been self-reported and objectively measured outcome measures has not been widely described. The utilization of wearable devices to document upper extremity limb activity is a new approach for objectively measuring outcomes. Therefore, the purpose of this study was to evaluate changes in pain, and self-reported function and objectively measured limb activity after RSA...
January 5, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28038912/effect-of-lateralized-design-on-muscle-and-joint-reaction-forces-for-reverse-shoulder-arthroplasty
#8
William Liou, Yang Yang, Graysen R Petersen-Fitts, Daniel J Lombardo, Sasha Stine, Vani J Sabesan
BACKGROUND: Manufacturers of reverse shoulder arthroplasty (RSA) implants have recently designed innovative implants to optimize performance in rotator cuff-deficient shoulders. These advancements are not without tradeoffs and can have negative biomechanical effects. The objective of this study was to develop an integrated finite element analysis-kinematic model to compare the muscle forces and joint reaction forces (JRFs) of 3 different RSA designs. METHODS: A kinematic model of a normal shoulder joint was adapted from the Delft model and integrated with the well-validated OpenSim shoulder model...
December 27, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28034540/reverse-shoulder-arthroplasty-in-patients-younger-than-55-years-2-to-12-year-follow-up
#9
Randall J Otto, Rachel E Clark, Mark A Frankle
BACKGROUND: This study reports the outcomes of reverse shoulder arthroplasty (RSA) in patients younger than 55 years with midterm to long-term follow-up. METHODS: Sixty-seven patients (average age, 47.9 years; range, 21-54 years) were identified who underwent RSA with an average 62.3 months of follow-up (24-144 months). There were 35 patients (group 1) who had a failed arthroplasty and 32 patients (group 2) who underwent primary RSA. Clinical outcomes included the American Shoulder and Elbow Surgeons (ASES) score, Simple Shoulder Test (SST) score, and range of motion...
December 26, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28024662/quantifying-the-competing-relationship-between-adduction-range-of-motion-and-baseplate-micromotion-with-lateralization-of-reverse-total-shoulder-arthroplasty
#10
Josie Elwell, Joseph Choi, Ryan Willing
Lateralizing the center of rotation (COR) of reverse total shoulder arthroplasty (rTSA) could improve functional outcomes and mitigate scapular notching, a commonly occurring complication of the procedure. However, resulting increases in torque at the bone-implant interface may negatively affect initial fixation of the glenoid-side component, especially if only two fixation screws can be placed. Shoulder-specific finite element (FE) models of four fresh-frozen cadaveric shoulders were constructed. Scapular geometry and material property distributions were derived from CT data...
November 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28005111/instability-after-reverse-total-shoulder-arthroplasty-which-patients-dislocate
#11
Eric M Padegimas, Benjamin M Zmistowski, Camilo Restrepo, Joseph A Abboud, Mark D Lazarus, Matthew L Ramsey, Gerald R Williams, Surena Namdari
Given the increasing use of reverse total shoulder arthroplasty (RTSA), it is important to study the complications associated with this procedure. We conducted a study of the incidence, predisposing factors, and treatment of RTSA dislocations. Using our institutional database, we retrospectively searched for RTSAs performed between September 27, 2010 and December 31, 2013 and identified postoperative dislocations. Four hundred eighty-seven patients underwent 510 RTSAs (393 primary, 117 revision). Fourteen patients had 15 dislocations (5 in primary RTSAs, 10 in revision RTSAs)...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28002214/management-of-acute-proximal-humeral-fractures
#12
Vamsi Krishna Kancherla, Anshuman Singh, Oke A Anakwenze
Proximal humeral fractures, which typically occur in elderly persons, are among the most common fractures. A myriad of nonsurgical and surgical treatment options exist for these injuries, including short-term immobilization and early physical therapy, percutaneous fixation, plate osteosynthesis, intramedullary nailing, hemiarthroplasty, and reverse shoulder arthroplasty. The choice of treatment depends on the fracture type and severity, surgeon expertise, patient age, and patient health status.
January 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27992683/yearly-trends-in-elective-shoulder-arthroplasty-2005-through-2013
#13
Mark T Dillon, Priscilla H Chan, Maria C S Inacio, Anshuman Singh, Edward H Yian, Ronald A Navarro
OBJECTIVE: The purposes of this study were to evaluate the (1) change in incidence rate of shoulder arthroplasty, the (2) utilization of shoulder arthroplasty for specific indications, and the (3) surgeon volume trends associated with these procedures between 2005 and 2013. METHODS: A population based cohort study was conducted using the over 7 million members of an integrated healthcare system in California. Shoulder arthroplasty cases performed between 2005 and 2013 were identified using a Shoulder Arthroplasty Registry...
December 19, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27966179/-endoprostheses-in-geriatric-traumatology
#14
B Buecking, D Eschbach, C Bliemel, M Knobe, R Aigner, S Ruchholtz
BACKGROUND: Geriatric traumatology is increasing in importance due to the demographic transition. In cases of fractures close to large joints it is questionable whether primary joint replacement is advantageous compared to joint-preserving internal fixation. OBJECTIVE: The aim of this study was to describe the importance of prosthetic joint replacement in the treatment of geriatric patients suffering from frequent periarticular fractures in comparison to osteosynthetic joint reconstruction and conservative methods...
December 13, 2016: Der Orthopäde
https://www.readbyqxmd.com/read/27939409/cost-effectiveness-of-arthroscopic-rotator-cuff-repair-versus-reverse-total-shoulder-arthroplasty-for-the-treatment-of-massive-rotator-cuff-tears-in-patients-with-pseudoparalysis-and-nonarthritic-shoulders
#15
Grant J Dornan, J Christoph Katthagen, Dimitri S Tahal, Maximilian Petri, Joshua A Greenspoon, Patrick J Denard, Stephen S Burkhart, Peter J Millett
PURPOSE: To determine the most cost-effective treatment strategy for patients with massive rotator cuff tears and pseudoparalysis of the shoulder without osteoarthritis of the glenohumeral joint (PP without OA). Specifically, we aimed to compare arthroscopic rotator cuff repair (ARCR) versus reverse total shoulder arthroplasty (RTSA) and investigate the effect of patient age on this decision. METHODS: A Markov decision model was used to compare 3 treatment strategies for addressing PP without OA: (1) ARCR with option to arthroscopically revise once, (2) ARCR with immediate conversion to RTSA on potential failure, and (3) primary RTSA...
December 6, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27939281/reverse-shoulder-arthroplasty-after-radial-to-axillary-nerve-transfer-for-axillary-nerve-palsy-with-concomitant-irreparable-rotator-cuff-tear
#16
Dane H Salazar, Peter N Chalmers, Susan E Mackinnon, Jay D Keener
No abstract text is available yet for this article.
January 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27933229/mid-term-shoulder-functional-and-quality-of-life-outcomes-after-shoulder-replacement-in-obese-patients
#17
Heather K Vincent, Aimee M Struk, Austin Reed, Thomas W Wright
BACKGROUND: Shoulder pain and loss of function are directly associated with obesity. QUESTIONS/PURPOSES: We hypothesized that significant interactions would exist between total shoulder arthroplasty (TSA) and reverse total shoulder arthroplasty (RSA) and obesity status on functional and quality of life (QOL) outcomes over the long term. Clinical and QOL outcomes (American Shoulder and Elbow Surgeons Evaluation form, Shoulder Pain and Disability Index, University of California at Los Angeles Shoulder Rating scale, Medical Outcomes Short Form 12 (SF-12), range of motion (ROM), and strength) were longitudinally compared in patients with low and high body mass index (BMI) after a TSA or a RSA...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27921129/-shoulder-endoprosthesis-in-the-elderly-hemiarthroplasty-or-total-shoulder-arthroplasty-anatomic-or-reverse
#18
J Kircher
Implantation of reverse shoulder endoprostheses is becoming more popular for elderly patients besides the well-established standard anatomic endoprostheses. The reasons for this are the increased life expectancy, age-dependent degeneration of the rotator cuff leading to cuff tear arthropathy, posttraumatic disability after failed osteosynthesis and primary reverse fracture arthroplasty. Stemless implants are more frequently used for primary osteoarthritis with the bone quality being the limiting factor. Modern implant systems allow the stepwise extension from bone preserving primary implants to modular and convertible revision implants that allow a partial exchange of components...
December 5, 2016: Der Orthopäde
https://www.readbyqxmd.com/read/27915404/is-there-any-influence-of-humeral-component-retroversion-on-range-of-motion-and-clinical-outcome-in-reverse-shoulder-arthroplasty-a-clinical-study
#19
F A de Boer, P M van Kampen, P E Huijsmans
PURPOSE: Reverse shoulder arthroplasty becomes more widely used as treatment for patients with complex cuff arthropathy. Theoretically, a higher retroversion of the humeral component leads to an increase in external rotation ROM and a decrease in internal rotation ROM. There is no consensus in optimal retroversion orientation. We retrospectively describe the effect of retroversion of the humeral component. We hypothesize that 20° humeral retroversion improves postoperative ROM, strength or clinical outcome scores compared to neutral retroversion...
December 3, 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/27904932/-the-reverse-shoulder-arthroplasty-delta-xtend-mid-term-results
#20
S Gruber, C Schoch, M Geyer
BACKGROUND: Reverse shoulder arthroplasty (RSA) has become a frequently used and established treatment for patients with cuff tear arthropathy, increasingly also for patients with fracture sequelae (FS), failed rotator cuff reconstruction and omarthrosis with cuff insufficiency. Since 2007 new generation prostheses, for example Delta Xtend (Depuy, Warsaw, USA), have been used, but few mid-term results have been published. OBJECTIVES: The aim of this study is to report on the outcome after RSA after a mean follow-up of 68 months (range 63-75), to verify the already published, encouraging early results and to learn about the function and pain situation after RSA in the mid-term period...
November 30, 2016: Der Orthopäde
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