Humerus- capitulum

Anterior view, right side

Anterior view, left side

The capitulum (translated this means little head) is also known as the lateral condyle of the humerus. It is an important landmark because it is the articulating surface for the humerus of the humeroradial joint. It articulates with the head of the radius. This is an unusual gliding joint (biaxial) in that it allows for flexion/extension of the forearm and rotation to provide for supination and pronation of the hand. Dr. J recommends that you call it the capitulum because then the little head of the humerus articulates with the head of the radius making it a Grant thing.