Pectoralis Major and Latissimus Release:
The shoulder complex consists of 4 joints working together to allow for overhead elevation of the arm. The most familiar of these joints is the gleno-humeral joint where the ball of the humerus sits into the glenoid fossa (socket) of the scapulae. Collapsed posture puts the pectorals in a short position and this can cause faulty positioning of shoulder blade (scapulae) on the rib cage.
Prolonged rounded shoulder posture can create an imbalance of anterior versus posterior musculature with anterior musculature pulling the humerus forward. The subscapularis when holding abnormal muscle tone can pull the humerus out of its neutral position within in the socket of the shoulder.