Bony landmark · Shoulders

Bicipital groove

Sulcus intertubercularis

The bicipital groove is the channel running down the front of the arm bone between the two tubercles. The tendon of the long head of the biceps runs in it, held in place by a roof of ligament, on its way up into the shoulder joint. The groove's lips and floor are attachment sites in their own right, and they belong to three of the big movers: pectoralis major on the outer lip, teres major on the inner lip, latissimus dorsi on the floor between them.