Arthroscopy-Assisted Combined Lower Trapezius Tendon Transfer and Superior Capsule Reconstruction Using Single Allogenic Achilles Tendon for Massive Irreparable Posterosuperior Rotator Cuff Tears.

Massive irreparable posterosuperior rotator cuff tears in relatively younger, active patients pose a significant clinical challenge. Superior capsular reconstruction (SCR) restores superior stability as a static stabilizer, whereas lower trapezius tendon transfer reestablishes external rotation and transverse plane balance as a dynamic stabilizer. We describe a simplified arthroscopy-assisted technique combining lower trapezius tendon transfer and superior capsular reconstruction using a single allogenic Achilles tendon graft to achieve simultaneous restoration of static and dynamic stabilizers, and external rotation strength of the shoulder.