Strain Analysis in the Scapula After a Reverse Total Shoulder Arthroplasty

2012 ◽  
Author(s):  
Radhika J. Patel ◽  
Chi Zhang ◽  
Yingxin Gao
Keyword(s):  
Articular Cartilage ◽  
Rotator Cuff ◽  
Shoulder Arthroplasty ◽  
Total Shoulder Arthroplasty ◽  
Cartilage Damage ◽  
Strain Analysis ◽  
Reverse Total Shoulder Arthroplasty ◽  
Articular Cartilage Damage ◽  
Reverse Total Shoulder ◽  
Rotator Cuff Arthropathy

A reverse total shoulder arthroplasty (RTSA) is strongly suggested for patients who suffer from rotator cuff (RTC) arthropathy, where RTC deficiency causes abnormal loading leading to articular cartilage damage. Studies show that 47% of RTSA patients have rotator cuff arthropathy and 27% have some form of osteoarthritis (OA) [1].

Effect of deltoid volume on range of motion and patient-reported outcomes following reverse total shoulder arthroplasty in rotator cuff-intact and rotator cuff-deficient conditions

2020 ◽  
pp. 175857322092504
Author(s):  
Samuel G McClatchy ◽  
Griffin M Heise ◽  
William M Mihalko ◽  
Frederick M Azar ◽  
Richard A Smith ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Range Of Motion ◽  
Shoulder Arthroplasty ◽  
Patient Reported Outcomes ◽  
Total Shoulder Arthroplasty ◽  
Deltoid Muscle ◽  
Reverse Total Shoulder Arthroplasty ◽  
Shoulder Range Of Motion ◽  
Patient Reported ◽  
Reverse Total Shoulder

Background Deltoid muscle function is paramount to the success of reverse total shoulder arthroplasty. The purpose of this study was to investigate the role of deltoid volume on shoulder range of motion and patient-reported outcomes following reverse total shoulder arthroplasty in rotator cuff-intact and rotator cuff-deficient conditions. Methods Retrospective review of records identified 107 patients who met inclusion criteria. The rotator cuff integrity was evaluated by two musculoskeletal-trained radiologists. Volumetric deltoid measurements were calculated from preoperative computed tomography or magnetic resonance imaging scans. Satisfactory outcomes were defined as forward elevation of at least 135°, external rotation of at least 35°, and American Shoulder and Elbow Surgeons and Single Assessment Numerical Evaluation scores of at least 70. Results Mean total deltoid muscle volume was significantly higher in patients with satisfactory forward elevation (57.8 ± 18.1 cm³) versus unsatisfactory forward elevation (48.6 ± 19.5 cm³) (p = 0.013). When separated by rotator cuff integrity, total deltoid volume was significantly higher (p = 0.030) in patients who achieved satisfactory forward elevation in the rotator cuff-deficient group but not the rotator cuff-intact group (p = 0.533). Discussion Preoperative deltoid volume directly correlated with achieving satisfactory forward elevation after reverse total shoulder arthroplasty in rotator cuff-deficient conditions and may be one factor in determining the ability to achieve satisfactory outcomes in the rotator cuff-deficient patient.

scholarly journals Reverse Total Shoulder Arthroplasty for Massive, Irreparable Rotator Cuff Tears Before the Age of 60 Years

2017 ◽  
Vol 99 (20) ◽  
pp. 1721-1729 ◽  
Author(s):  
Lukas Ernstbrunner ◽  
Aline Suter ◽  
Sabrina Catanzaro ◽  
Stefan Rahm ◽  
Christian Gerber
Keyword(s):  
Rotator Cuff ◽  
Shoulder Arthroplasty ◽  
Total Shoulder Arthroplasty ◽  
Reverse Total Shoulder Arthroplasty ◽  
Rotator Cuff Tears ◽  
Reverse Total Shoulder

Influence of Humeral Version and Deltoid Tension on Glenohumeral Kinematics After Reverse Total Shoulder Arthroplasty

2011 ◽  
Author(s):  
Heath B. Henninger ◽  
Alexej Barg ◽  
Robert Z. Tashjian ◽  
Robert T. Burks ◽  
Kent N. Bachus ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Range Of Motion ◽  
Outcome Measures ◽  
Shoulder Arthroplasty ◽  
Surgical Intervention ◽  
Total Shoulder Arthroplasty ◽  
Reverse Total Shoulder Arthroplasty ◽  
And Function ◽  
Reverse Total Shoulder

Reverse total shoulder arthroplasty (rTSA) is used to improve pain and function in arthritic, rotator cuff deficient shoulders. Surgical intervention is considered successful if range of motion and stability of the joint is maximized and force to abduct the arm is minimized. Implant hardware positioning may affect these outcome measures.

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