What is medial bicipital groove?

The medial bicipital groove, also known as the bicipital sulcus, is a shallow groove located on the anterior aspect of the humerus bone. It runs from the upper end of the humerus, just below the greater tubercle, to the midpoint of the bone.

The groove serves as an attachment site for the tendon of the long head of the biceps brachii muscle, which is responsible for flexion and supination of the forearm.

Injuries to the medial bicipital groove can occur due to repetitive strain or overuse, leading to inflammation, pain, and decreased range of motion in the arm. It can also be affected by certain medical conditions, such as tendonitis or tendon rupture.

In addition, the medial bicipital groove is used as a landmark in shoulder surgery, as it helps surgeons locate the proximal end of the humerus.