The pectoralis major muscle originates from multiple locations, including the costal cartilage of ribs two through six, the sternum, the medial half of the clavicle and the external oblique fascia.
1 Department of Orthopaedic Surgery, St Vincent's University Hospital, Elm Park, Dublin 4, Ireland 2 Department of Accident and Emergency, St Vincent's University Hospital The treatment of pectoralis ...
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