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The Benefit of Glenoid lateralization (BIO-RSA) To Optimize Range of Motion and Reduce Scapulohumeral Impingement in Reverse Shoulder Arthroplasty

On 01/11/2018
Article viewed 101 times

The Benefit of Glenoid lateralization (BIO-RSA) To Optimize Range of Motion and Reduce Scapulohumeral Impingement in Reverse Shoulder Arthroplasty

By Marc-Olivier Gauci, Adrien Jacquot, Adam WILSON, Jean Chaoui, Gilles Walch, Pascal Boileau in category TOPICALITY

Since 2006 we have performed glenoid lateralization in reverse shoulder arthroplasty (RSA) through bone grafting (BIO-RSA) in order to correct the superior inclination of the glenoid as well as reduce scapular notching. The original Grammont type RSA had an INLAY design for the humerus implant; (i.e., with PE cup under the plane of the metallic cup).

Introduction

Since 2006 we have performed glenoid lateralization in reverse shoulder arthroplasty (RSA) through bone grafting (BIO-RSA) in order to correct the superior inclination of the glenoid as well as reduce scapular notching (1,2). The original Grammont type RSA had an INLAY design for the humerus implant; (i.e., with PE cup under the plane of the metallic cup). New convertible humeral implants have evolved toward ONLAY design (i.e., with PE cup over the plane of the metallic cup).

For the last seven years, we plan all our cases of anatomic and reverse shoulder arthroplasties using BlueprintTM software (Glenosys - Wright). The software, that we have developed, allows planning the optimal implant’s size and positioning. It also allows now anticipating the optimal postoperative range of motion (ROM) for RSA.

Techniques of prosthesis positioning, as well as the choice of the implant design for Reverse Shoulder Arthroplasty (RSA) have evolved in our department in order to maximize postoperative mobility and reduce scapulohumeral impingement in all planes of the space.

The purpose of the present study was to compare the ROM in RSA with two different humeral implant designs (INLAY and ONLAY) and a glenoid implant that could be lateralized or not (RSA vs BIO-RSA) using...

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