Clinical and radiological outcomes after reverse shoulder arthroplasty with less medialized endoprosthesis after mean follow-up time of 45 months.

INTRODUCTION: The purpose of this study was to evaluate outcomes after reverse shoulder arthroplasty for the treatment of complex three- and four-fragment proximal humeral fractures after mean follow-up time of 45 months and to compare our results with the results published by other authors.

MATERIALS AND METHODS: Retrospectively we have analyzed 27 consecutive patients after total arthroplasty with less medialized reverse shoulder prosthesis used for the treatment of complex proximal humeral fracture. The median age and standard deviation was 67.5 ± 7.3 years (range 55-85). The average follow-up time was 45 months. Shoulder function was evaluated using Simple Shoulder Test and Constant scale. Patient satisfaction about the treatment was evaluated using Likert-type questionnaire. All patients were investigated radiologically for possible complications using standard lateral and anterior views.

RESULTS: All patients were satisfied (74%) or highly satisfied (26%). The mean total Constant-Murley score was 57.6 pts. (range 37.4-80.2). Mean total Simple Shoulder Test score was 73.5 pts. (range 49.8-100). There were two cases with heterotopic ossification and one with greater tubercle malposition. We found no signs of scapular notching, implant failure or loosening.

CONCLUSIONS: Results after reverse arthroplasty for complex proximal humeral fractures yield good clinical, functional, and radiological outcomes after mean follow-up time of 45 months. Results are comparable to other studies published in the recent literature.