Trochlea of humerus

Trochlea of Humerus

The Trochlea of Humerus is a critical anatomical structure located in the distal end of the humerus, the long bone in the upper arm. It plays a significant role in the elbow joint, allowing for the flexion and extension of the forearm.

File:Trochlea of humerus.png

The Trochlea of Humerus

Anatomy

The Trochlea of Humerus is a spool-shaped, or pulley-like, surface on the anterior side of the humerus. It is medial to the capitulum, another important structure in the elbow joint. The trochlea is characterized by its deep groove, which articulates with the ulna to form the hinge joint of the elbow.

Function

The primary function of the Trochlea of Humerus is to facilitate the movement of the elbow joint. It allows for the flexion and extension of the forearm by articulating with the ulna. This articulation also provides stability to the elbow joint, preventing dislocation.

Clinical Significance

Injuries or abnormalities of the Trochlea of Humerus can lead to a range of clinical conditions. These include fractures, osteoarthritis, and elbow dislocation. Treatment options vary depending on the severity and type of condition, but may include physical therapy, medication, or surgery.

File:Elbow joint.png

Elbow joint showing the Trochlea of Humerus

See Also

• Humerus
• Elbow Joint
• Ulna