As a disclaimer, the videos and photos before and after are two different patients that have given permission to have their images posted. The patient in the "after" video is a young man injured in military training several years ago. He had failed physical therapy and had EMG findings consistent with a long thoracic nerve palsy causing medial scapular winging.
It is clear to see that the scapula does not move correctly. Pardon the sideways video. The second video shows a "scapular compression test" illustrating better forward elevation with compression of the shoulder blade against the chest wall.
A portion of the patient's pectoralis tendon was disconnected from the humerus, routed along the chest wall and attached to the lower border of the shoulder blade. In the video below, the patient is about 10 weeks postop. His function is drastically improved from his preoperative function and continues to improve. He has returned to full duty.