The In Vivo Impact of Computer Navigation on Screw Number and Length in Reverse Total Shoulder Arthroplasty

2021 ◽  
Author(s):  
Keegan M. Hones ◽  
Joseph J. King ◽  
Bradley S. Schoch ◽  
Aimee M. Struk ◽  
Kevin W. Farmer ◽  
...  
Keyword(s):  
Shoulder Arthroplasty ◽  
Total Shoulder Arthroplasty ◽  
Computer Navigation ◽  
Reverse Total Shoulder Arthroplasty ◽  
Reverse Total Shoulder

In vivo reverse total shoulder arthroplasty contact mechanics

2020 ◽  
Author(s):  
Madeleine L. Van de Kleut ◽  
Chaithanya Nair ◽  
Jaques S. Milner ◽  
David W. Holdsworth ◽  
George S. Athwal ◽  
...  
Keyword(s):  
Contact Mechanics ◽  
Shoulder Arthroplasty ◽  
Total Shoulder Arthroplasty ◽  
Reverse Total Shoulder Arthroplasty ◽  
Reverse Total Shoulder

scholarly journals An update on reverse total shoulder arthroplasty: current indications, new designs, same old problems

2021 ◽  
Vol 6 (3) ◽  
pp. 189-201
Author(s):  
Thomas Kozak ◽  
Stefan Bauer ◽  
Gilles Walch ◽  
Saad Al-karawi ◽  
William Blakeney
Keyword(s):  
Shoulder Arthroplasty ◽  
Mixed Reality ◽  
Total Shoulder Arthroplasty ◽  
Computer Navigation ◽  
Reverse Total Shoulder Arthroplasty ◽  
Patient Specific ◽  
Shoulder Replacement ◽  
Neck Shaft Angle ◽  
Shaft Angle ◽  
Reverse Total Shoulder

Reverse total shoulder arthroplasty (RTSA) was originally developed because of unsatisfactory results with anatomic shoulder arthroplasty options for the majority of degenerative shoulder conditions and fractures. After initial concerns about RTSA longevity, indications were extended to primary osteoarthritis with glenoid deficiency, massive cuff tears in younger patients, fracture, tumour and failed anatomic total shoulder replacement. Traditional RTSA by Grammont has undergone a number of iterations such as glenoid lateralization, reduced neck-shaft angle, modular, stemless components and onlay systems. The incidence of complications such as dislocation, notching and acromial fractures has also evolved. Computer navigation, 3D planning and patient-specific implantation have been in use for several years and mixed-reality guided implantation is currently being trialled. Controversies in RTSA include lateralization, stemless humeral components, subscapularis repair and treatment of acromial fractures. Cite this article: EFORT Open Rev 2021;6:189-201. DOI: 10.1302/2058-5241.6.200085

scholarly journals Reverse total shoulder arthroplasty: research models

Joints ◽  
2016 ◽  
Vol 04 (04) ◽  
pp. 236-246
Author(s):  
Stefano Petrillo ◽  
Umile Longo ◽  
Lawrence Gulotta ◽  
Alessandra Berton ◽  
Andreas Kontaxis ◽  
...  
Keyword(s):  
Shoulder Arthroplasty ◽  
Considerable Increase ◽  
Glenohumeral Joint ◽  
Total Shoulder Arthroplasty ◽  
Reverse Total Shoulder Arthroplasty ◽  
Shoulder Prosthesis ◽  
Biomechanical Models ◽  
Reverse Total Shoulder Replacement ◽  
Reverse Total Shoulder

Purpose:the past decade has seen a considerable increase in the use of research models to study reverse total shoulder arthroplasty (RTSA). Nevertheless, none of these models has been shown to completely reflect real in vivo conditions. Methods: we performed a systematic review of the literature matching the following key words: “reverse total shoulder arthroplasty” or “reverse total shoulder replacement” or “reverse total shoulder prosthesis” and “research models” or “biomechanical models” or “physical simulators” or “virtual simulators”. The following databases were screened: Medline, Google Scholar, EMBASE, CINAHIL and Ovid. We identified and included all articles reporting research models of any kind, such as physical or virtual simulators, in which RTSA and the glenohumeral joint were reproduced. Results: computer models and cadaveric models are the most commonly used, and they were shown to be reliable in simulating in vivo conditions. Bone substitute models have been used in a few studies.Mechanical testing machines provided useful information on stability factors in RTSA. Conclusions: because of the limitations of each individual model, additional research is required to develop a research model of RTSA that may reduce the limitations of those presently available, and increase the reproducibility of this technique in the clinical setting.

scholarly journals In vivo three-dimensional scapular kinematic alterations after reverse total shoulder arthroplasty

2020 ◽  
Vol 28 (2) ◽  
pp. 230949902092197
Author(s):  
Eugene Kim ◽  
Taedong Jang ◽  
Hee Jin Park ◽  
Sumika Ikemoto ◽  
Tsuyoshi Murase ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Shoulder Arthroplasty ◽  
Sagittal Plane ◽  
Total Shoulder Arthroplasty ◽  
Three Dimensional ◽  
Reverse Total Shoulder Arthroplasty ◽  
Axial Plane ◽  
Coronal Plane ◽  
Reverse Total Shoulder

Background: In vivo three-dimensional (3D) kinematics of the scapula after reverse total shoulder arthroplasty (rTSA) have been sparsely investigated. The aim of this study was to analyze static and dynamic kinematic alterations of the scapula after rTSA in vivo with the use of computer-aided 3D reconstruction program. Methods: A total of 15 patients with cuff tear arthropathy treated by rTSA participated. Scapulae with rTSA and the contralateral scapulae were evaluated with computed tomography scan data in 0° and 120° forward flexion positions of the glenohumeral joint. To examine static scapular kinematic alterations, the angular position and distance from the thorax were evaluated in the shoulder neutral position. 3D rotational and translational movements of the scapula in relation to the thorax were also measured during arm elevation to evaluate dynamic scapular kinematic alterations. Results: Scapulae with rTSA were more anteriorly tilted in the sagittal plane and more internally rotated in the axial plane than were the contralateral scapulae. However, no significant differences were observed in the upward rotated position in the coronal plane or in the distance from the thorax in any plane between the scapulae with rTSA and the contralateral scapulae. In dynamic analyses, upward rotational movement in the coronal plane, external rotation in the axial plane, and posterior tilting in the sagittal plane showed significant differences between the scapulae with rTSA and the contralateral scapulae during elevation. In contrast, translational movements in coordination revealed no statistical differences between the two scapular groups except for lateral translation. Conclusion: Data from the 3D reconstruction program showed that rTSA might result in static positional changes and dynamic movement alterations. Level of Evidence: Therapeutic, IV

Complication and revision rates after reverse total shoulder revision from hemiarthroplasty: a systematic review

2021 ◽  
pp. 175857322110193
Author(s):  
Arjun K Reddy ◽  
Jake X Checketts ◽  
B Joshua Stephens ◽  
J Michael Anderson ◽  
Craig M Cooper ◽  
...  
Keyword(s):  
Systematic Review ◽  
Shoulder Arthroplasty ◽  
Revisional Surgery ◽  
Total Shoulder Arthroplasty ◽  
Surgical Site Infections ◽  
Total Sample ◽  
Reverse Total Shoulder Arthroplasty ◽  
Common Complication ◽  
Humeral Component ◽  
Reverse Total Shoulder

Background Thus, the purpose of the present study was to (1) characterize common postoperative complications and (2) quantify the rates of revision in patients undergoing hemiarthroplasty to reverse total shoulder arthroplasty revisional surgery. We hypothesize that hardware loosenings will be the most common complication to occur in the sample, with the humeral component being the most common loosening. Methods This systematic review adhered to PRISMA reporting guideline. For our inclusion criteria, we included any study that contained intraoperative and/or postoperative complication data, and revision rates on patients who had undergone revision reverse total shoulder arthroplasty due to a failed hemiarthroplasty. Complications include neurologic injury, deep surgical site infections, hardware loosening/prosthetic instability, and postoperative fractures (acromion, glenoid, and humeral fractures). Results The study contained 22 studies that assessed complications from shoulders that had revision reverse total shoulder arthroplasty from a hemiarthroplasty, with a total sample of 925 shoulders. We found that the most common complication to occur was hardware loosenings (5.3%), and of the hardware loosenings, humeral loosenings (3.8%) were the most common. The revision rate was found to be 10.7%. Conclusion This systematic review found that revision reverse total shoulder arthroplasty for failed hemiarthroplasty has a high overall complication and reintervention rates, specifically for hardware loosening and revision rates.

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