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Which bones form the hinge joint at the human elbow?
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joint
The ligaments and cartilage in a knee joint.
The hinge joint at the human elbow is primarily formed by the articulation between the humerus of the upper arm and the ulna of the forearm.12
Specifically, the spool-shaped trochlea at the lower end of the humerus fits into a notch in the ulna to facilitate the backward-forward swinging motion characteristic of a hinge joint. While the radius is also part of the overall elbow structure and contributes to rotational movements, the primary hinge action is achieved through the humerus-ulna junction.314