Where does the pectoralis major insert?

The pectoralis major inserts at the bicipital groove of the humerus. This is significant because the bicipital groove, also known as the intertubercular sulcus, is a groove on the humerus where the tendon of the long head of the biceps brachii also runs. The insertion of the pectoralis major in this location allows it to effectively contribute to several movements of the shoulder, including flexion, adduction, and internal rotation. Understanding this insertion point is crucial for those involved in sports massage and rehabilitation, as it directly relates to the muscle’s function and how it may contribute to common shoulder injuries or conditions.

The coracoid process, while associated with the pectoralis minor muscle, is not the insertion point for the pectoralis major. Similarly, the ribs 3 to 5 are where the pectoralis major originates rather than inserts, and the sacrum is not related to the pectoralis major anatomy at all.