Restoration of rotator cuff muscle forces in lower trapezius transfer and superior capsular reconstruction in massive rotator cuff tear.

ABSTRACT:

Background

This study aimed to evaluate the biomechanical effects of lower trapezius tendon transfer (LTT), superior capsular reconstruction (SCR), and their combination on rotator cuff muscle force restoration in irreparable massive rotator cuff tears (MRCTs). We hypothesized that combining LTT with SCR would yield superior biomechanical restoration compared to either technique alone.

Methods

Eight fresh-frozen cadaveric shoulders were tested under the following 6 sequential conditions: (1) intact control, (2) supraspinatus tear, (3) MRCT (supraspinatus and infraspinatus tear), (4) LTT using an Achilles allograft, (5) LTT combined with SCR, and (6) SCR alone. Muscle forces in the teres minor (TM) and subscapularis (SubS) were measured during humeral abduction using a dynami

SUBMITTER: Amirouche F 

PROVIDER: S-EPMC12490552 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature