Elbow joint (English)

The elbow joint is made up of three joints including the humeroulnar, humeroradial and proximal radioulnar joints. The humeroulnar joint is between the trochlea on the medial aspect of the distal end of the humerus and the trochlear notch on the proximal ulna. The humeroradial joint is formed between the capitulum on the lateral aspect of the distal end of the humerus with the head of the radius. The proximal ends of the radius and ulna articulate with each other at the proximal radioulnar joint. There are three main ligaments that support the elbow joint: the ulnar collateral ligament, radial collateral ligament and anular ligament. The ulnar and radial collateral ligaments are each made up of three component parts: -Ulnar collateral ligament: anterior bundle, posterior bundle, and transverse bundle (Cooper's ligament). -Radial collateral ligament: annular ligament, radial collateral ligament (proper), and lateral ulnar collateral ligament.