Massive rotator cuff tears (MRCTs), especially those involving the posterosuperior tendons, present significant clinical challenges due to tendon retraction, poor tissue quality, and advanced muscle degeneration. 12]3 In particular, involvement of the external rotators in MRCTs can severely impair essential daily activities such as combing hair or using utensils and can significantly impact patients
Chang et al. (Thu,) studied this question.