The fascia of the pectoral region is attached to the clavicle and sternum.
The pectoral fascia invests the pectoralis major and is continuous inferiorly with the fascia of the anterior abdominal wall
The pectoral fascia leaves the lateral border of the pectoralis major and becomes the axillary fascia which forms the floor of the axilla.
Deep to the pectoral fascia and the pectoralis major, another fascial layer, the clavipectoral fascia, descends from the clavicle, enclosing the subclavius and then the pectoralis minor, becoming continuous inferiorly with the axillary fascia.
The part of the clavipectoral fascia between the pectoralis minor and the subclavius, the costocoracoid membrane, is pierced by the lateral pectoral nerve, which primarily supplies the pectoralis major.
The deltoid fascia descends over the superficial surface of the deltoid from the clavicle, acromion, and scapular spine.
The brachial fascia, a sheath of deep fascia, encloses the arm like a snug sleeve deep to the skin and subcutaneous tissue
The brachial fascia is attached inferiorly to the epicondyles of the humerus and the olecranon of the ulna and is continuous with the antebrachial fascia, the deep fascia of the forearm |