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Observational Study
. 2023 Dec;107(4):463-469.
doi: 10.1007/s12306-023-00791-0. Epub 2023 Jul 3.

Influence of subscapularis tendon reattachment after reverse shoulder arthroplasty: clinical findings and ultrasonographic evaluation of the subscapularis at 89 months mean follow-up

F A de Boer  1 , J H Pasma  2 , P E Huijsmans  3 , P E Flikweert  2
Affiliations
Observational Study

Influence of subscapularis tendon reattachment after reverse shoulder arthroplasty: clinical findings and ultrasonographic evaluation of the subscapularis at 89 months mean follow-up

F A de Boer et al. Musculoskelet Surg. 2023 Dec.

Abstract

Background: Reverse shoulder arthroplasty (RSA) is commonly used to treat rotator cuff arthropathy. In the deltopectoral approach for RSA, the subscapularis tendon is (partly) detached. The clinical effects of subscapularis reattachment are still under debate. An observational study was performed to evaluate the clinical effects of subscapularis tendon reattachment on the mid- to long-term following RSA.

Methods: In this study, 40 patients for a total of 46 shoulders with a reverse shoulder prosthesis participated. Constant Murley Score (CMS), Oxford Shoulder Score (OSS), Range of Motion (ROM) and abduction and internal rotation strength were measured. The integrity of the subscapularis tendon at follow-up was assessed using ultrasound. Outcomes were compared between three groups: repair and intact at follow-up, repair and not intact, and no repair.

Results: Mean follow-up was 89 months with a minimum of three years. CMS, OSS, ROM and strength did not differ between groups. One-third of the initially reattached subscapularis tendons were still present at follow-up. No dislocations were reported.

Conclusion: This study showed no clinical effects of subscapularis reattachment after reverse shoulder arthroplasty on the mid- to long-term.

Keywords: Arthroplasty, Replacement, Shoulder; Clinical outcome; Reverse shoulder arthroplasty; Subscapularis.

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