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Clinical Orthopaedics and Related Research®

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01-09-2011 | Symposium: Reverse Total Shoulder Arthroplasty

Do Less Medialized Reverse Shoulder Prostheses Increase Motion and Reduce Notching?

Authors: Philippe Valenti, MD, Philippe Sauzières, MD, Denis Katz, MD, Ibrahim Kalouche, MD, Alexandre Sahin Kilinc, MD

Published in: Clinical Orthopaedics and Related Research® | Issue 9/2011

Abstract

Background

Cuff tear arthropathy is the primary indication for total reverse shoulder arthroplasty. In patients with pseudoparalytic shoulders secondary to irreparable rotator cuff tear, reverse shoulder arthroplasty allows restoration of active anterior elevation and painless shoulder. High rates of glenoid notching have also been reported. We designed a new reverse shoulder arthroplasty with a center of rotation more lateral than the Delta prosthesis to address this problem.

Questions/purposes

Does reduced medialization of reverse shoulder arthroplasty improve shoulder motion, decrease glenoid notching, or increase the risk of glenoid loosening?

Patients and Methods

We retrospectively reviewed 76 patients with 76 less medialized reverse shoulder prostheses implanted for pseudoparalytic shoulder with rotator cuff deficiency between October 2003 and May 2006. Shoulder motion, Constant-Murley score, and plain radiographs were analyzed. Minimum followup was 24 months (mean, 44 months; range, 24–60 months).

Results

The absolute Constant-Murley score increased from 24 to 59, representing an increase of 35 points. The range of active anterior elevation increased by 61°, and the improvement in pain was 10 points. The gain in external rotation with elbow at the side was 15°, while external rotation with 90° abduction increased by 30°. Followup showed no glenoid notching and no glenoid loosening with these less medialized reverse prostheses.

Conclusions

Less medialization of reverse shoulder arthroplasty improves external and medial rotation, thus facilitating the activities of daily living of older patients. The absence of glenoid notching and glenoid loosening hopefully reflects longer prosthesis survival, but longer followup is necessary to confirm these preliminary observations.

Level of Evidence

Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.

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Title: Do Less Medialized Reverse Shoulder Prostheses Increase Motion and Reduce Notching?
Authors: Philippe Valenti, MD
Philippe Sauzières, MD
Denis Katz, MD
Ibrahim Kalouche, MD
Alexandre Sahin Kilinc, MD
Publication date: 01-09-2011
Publisher: Springer-Verlag
Published in: Clinical Orthopaedics and Related Research® / Issue 9/2011
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI: https://doi.org/10.1007/s11999-011-1844-8

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Do Less Medialized Reverse Shoulder Prostheses Increase Motion and Reduce Notching?

Abstract

Background

Questions/purposes

Patients and Methods

Results

Conclusions

Level of Evidence

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Questions/purposes

Patients and Methods

Results

Conclusions

Level of Evidence

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