Elbow joint

Elbow Joint

The Elbow Joint is a complex hinge joint formed between the distal end of the humerus in the upper arm and the proximal ends of the ulna and radius in the forearm. The elbow allows for the flexion and extension of the forearm relative to the upper arm, as well as rotation of the forearm and wrist.

Anatomy

The elbow joint consists of three bones: the humerus, the ulna, and the radius. The humerus is the bone of the upper arm, and the ulna and radius are the two bones of the forearm. The elbow joint is where these three bones meet.

Humerus

The humerus is the bone of the upper arm. It forms the upper part of the elbow joint, articulating with the ulna and radius in the forearm.

Ulna

The ulna is one of the two bones of the forearm. It forms the lower part of the elbow joint, articulating with the humerus in the upper arm.

Radius

The radius is one of the two bones of the forearm. It also forms part of the elbow joint, articulating with the humerus in the upper arm.

Function

The elbow joint allows for two basic movements: flexion and extension. Flexion is the bending of the elbow, which decreases the angle between the upper arm and the forearm. Extension is the straightening of the elbow, which increases this angle.

Clinical Significance

Injuries to the elbow joint are common and can result in conditions such as tennis elbow, golfer's elbow, and elbow bursitis. Treatment for these conditions can range from rest and physical therapy to surgery in severe cases.

See Also

• Humerus
• Ulna
• Radius
• Tennis elbow
• Golfer's elbow
• Elbow bursitis

Elbow joint Resources
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