Trochlea of Humerus

The structure indicated is the trochlea of the humerus.

The distal end of the humerus consists of several features:

• Condyle, consisting of the capitulum and trochlea
• Medial and lateral epicondyles
• Medial and lateral supracondylar ridges
• Radial fossa, coronoid fossa, olecranon fossa

A large central condyle which has two articular components – the capitulum is the lateral articular component and articulates with the radius, and the trochlea is the medial component which articulates with the ulna.

Learn more about the anatomy of the elbow joint in this tutorial.