Why Repair the Subscapularis? A Logical Rationale

Arthroscopic still images and video segments of a combined full-thickness tear of the entire subscapularis tendon and the supraspinatus tendon extending into the infraspinatus tendon, viewed from the lateral portal with the patient in the beach-chair position in a left shoulder. When the subscapularis tendon is retracted laterally and then repaired securely onto the prepared lesser tuberosity, the supraspinatus and infraspinatus tendon tear is brought more laterally over the greater tuberosity.