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Related Experiment Video

Updated: Jun 3, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Do less medialized reverse shoulder prostheses increase motion and reduce notching?

Philippe Valenti1, Philippe Sauzières, Denis Katz

  • 1Institut de la main, Clinique Jouvenet, 6 square Jouvenet, 75016 Paris, France.

Clinical Orthopaedics and Related Research
|March 16, 2011
PubMed
Summary
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This study found that less medialized reverse shoulder arthroplasty improved shoulder motion and eliminated glenoid notching and loosening. These results suggest improved prosthesis survival for patients with rotator cuff deficiency.

Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Medical device design

Background:

  • Cuff tear arthropathy is a leading cause for reverse shoulder arthroplasty.
  • Reverse shoulder arthroplasty restores function in pseudoparalytic shoulders but has high rates of glenoid notching.
  • A novel prosthesis with a more lateral center of rotation was developed to mitigate glenoid notching.

Purpose of the Study:

  • To evaluate if reduced medialization in reverse shoulder arthroplasty enhances shoulder motion.
  • To determine if less medialized designs decrease glenoid notching.
  • To assess the risk of glenoid loosening with reduced medialization.

Main Methods:

  • Retrospective review of 76 patients who received less medialized reverse shoulder prostheses.

Related Experiment Videos

Last Updated: Jun 3, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

  • Analysis of shoulder motion, Constant-Murley scores, and plain radiographs.
  • Minimum 24-month follow-up (mean 44 months).

    • Main Results:

    • Significant improvements in shoulder motion, including active anterior elevation (61°) and external rotation (15° at side, 30° at 90° abduction).
    • Constant-Murley scores increased by 35 points, and pain scores improved by 10 points.
    • No instances of glenoid notching or glenoid loosening were observed.

    Conclusions:

    • Reduced medialization of reverse shoulder arthroplasty improves rotational range of motion.
    • The absence of glenoid notching and loosening suggests potential for longer prosthesis survival.
    • Further long-term follow-up is required to confirm these preliminary findings.