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Published in: International Orthopaedics 9/2019

01-09-2019 | Original Paper

Benefits of a metallic lateralized baseplate prolonged by a long metallic post in reverse shoulder arthroplasty to address glenoid bone loss

Authors: Philippe Valenti, Johanna Sekri, Jean Kany, Imen Nidtahar, Jean-David Werthel

Published in: International Orthopaedics | Issue 9/2019

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Abstract

Background

Severe glenoid bone loss remains a surgical challenge. This condition is known to be associated with high rates of glenoid component failure.

Purpose

The objective of this study was to evaluate clinical and radiological outcomes of a lateralized metal-backed 15.2-mm keeled baseplate prolonged by a thin 24.8-mm metallic post fixed directly in the subscapularis fossa in primary cases of reverse shoulder arthroplasty (RSA) for severe glenoid bone loss and in revision cases.

Materials and methods

Between January 2011 and December 2014, 51 shoulders (50 patients) underwent primary or revision RSA using this baseplate. Forty-five shoulders in 44 patients were followed for a minimum of two years (mean, 33 months; range, 24–60 months). The mean age of the patients was 76 years (range, 55–93 years). Outcome measures included pain, range of motion, Constant Score, and complications.

Results

The complication rate was 12% in primary cases and 25% in revision cases. One glenoid implant (4%) failed in primary cases and one glenoid implant (5%) failed in revision cases. Pain and range of motion were significantly improved in both groups. The mean Constant Score improved from 24 (± 7) to 62 (± 9) in primary cases and from 24 (± 10) to 58 (± 12) in revision cases.

Conclusion

A lateralized metal-backed 15.2-mm keeled baseplate prolonged by a thin 24.8-mm metallic post fixed directly in the subscapularis fossa may provide satisfactory mid-term outcomes in patients with large glenoid bone defects where initial press-fit of a regular baseplate is impossible to obtain.
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Metadata
Title
Benefits of a metallic lateralized baseplate prolonged by a long metallic post in reverse shoulder arthroplasty to address glenoid bone loss
Authors
Philippe Valenti
Johanna Sekri
Jean Kany
Imen Nidtahar
Jean-David Werthel
Publication date
01-09-2019
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 9/2019
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-018-4249-4

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