Key result
Retrieved total shoulder arthroplasty systems demonstrated significant correlations between glenoid loosening and preoperative pain (r=1.00, P<0.001) and glenoid damage and rotator cuff tears.
Observational (n=48)
Effect estimate: r = 1.00
p-value: p=<.001
Wear and damage of glenoid and humeral components in total shoulder arthroplasty correlate with rotator cuff tearing and loosening, suggesting improved design or indications may reduce failure.
Retrieval analysis of failed TSA components identifies failure patterns; leaves open whether findings guide design changes without prospective validation.
Background Retrieved clinically failed anatomic total shoulder arthroplasty (TSA) components as well as associated radiographs and medical records were analyzed in order to investigate the origins of clinical failure(s) of TSA components. Methods Fifty TSA systems were retrieved from 48 patients including 27 females and 21 males; components were implanted for an average of 68 months (range, 2–267). Data obtained through radiographic analysis, medical records review, and damage mode analysis of each component were performed and statistically analyzed. Results Significant correlations were found between glenoid loosening and preoperative pain ( r = 1.00, P < .001), humeral stem scratching and humeral loosening (Zone 1: r = .60, P < .01; Zone 2: r = .45, P = .03; Zone 3: r = .45, P = .03) , as well as glenoid damage and rotator cuff tears ( r = .36, P = .02). Discussion Wear and damage of the glenoid and humeral components, which may result from rotator cuff tearing, may lead to accelerated loosening, clinical failure, and early revision arthroplasty. Improved implant design and/or surgical indications may improve implant performance, thereby reducing the incidence of implant damage and wear, and result in improved clinical outcomes.
No takes yet. Share an insight, caveat, or question.
Moore et al. (2017) conducted an observational in Clinically failed anatomic total shoulder arthroplasty (n=48). Anatomic total shoulder arthroplasty was evaluated on Correlations between implant damage/loosening and clinical/radiographic findings (r = 1.00, p=<.001). Retrieved total shoulder arthroplasty systems demonstrated significant correlations between glenoid loosening and preoperative pain (r=1.00, P<0.001) and glenoid damage and rotator cuff tears.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: