What is the distal attachment of the latissimus dorsi?

The latissimus dorsi, a large muscle of the back, has a distal attachment at the floor of the intertubercular groove of the humerus. This groove, also known as the bicipital groove, is situated between the greater and lesser tubercles of the humerus. The latissimus dorsi plays an important role in movements such as adduction, extension, and internal rotation of the shoulder joint, and its attachment in this area allows for effective leverage during these movements.

The choice for the proximal attachment sites, such as the medial border of the scapula and the base of the spine of the scapula, are not relevant here, as they do not reflect the actual site where the latissimus dorsi inserts. Similarly, the posterior border of the clavicle is unrelated to this muscle's attachment and function. The precise distal attachment of the latissimus dorsi is crucial for understanding its mechanical role in upper body movements.