腱採取と関節鏡視下アキレス腱同種移植固定のための下部僧帽筋転移：テクニカルチップ

Arthroscopy-assisted lower trapezius transfer is increasingly recognized as a standard approach for addressing irreparable posterosuperior rotator cuff tears. A posterior incision is made along the medial margin of the scapula to identify and dissect the lower trapezius. The Achilles allograft is arthroscopically fixed to the greater tuberosity with a knotless double-row "transosseous-equivalent" repair and to the trapezius using Pulver-Taft technique sutures. The arm should remain immobilized in abduction and neutral rotation for 6 weeks. This procedure enables a dynamic tendon transfer, restoring torque biomechanics and normalizing glenohumeral joint function.