An irreparable anterosuperior massive rotator cuff tear with an irreparable subscapularis tear is not common; however, once symptomatic, it would become a challenging situation. Tendon transfer is a choice and the pectoralis major is a commonly selected graft source. However, there are theoretical concerns over its use: high invasiveness and low reproducibility, different force vector from the subscapularis, unsuitability for the arthroscopic modification, and difficulty in conversion to the reverse shoulder arthroplasty due to adhesions and scar formation in the anterior shoulder. Recently, open pectoralis minor transfer has been advocated as an alternative reconstruction option. We describe an arthroscopic-assisted technique of pectoralis minor transfer for irreparable anterosuperior massive rotator cuff tear.
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