Hinge joint

Definition

A hinge joint is a type of synovial joint that allows movement in one plane, primarily permitting flexion and extension. It resembles the mechanical operation of a door hinge, enabling parts of the body to bend and straighten.

Related terms

Synovial fluid: A viscous, egg white-like fluid that reduces friction between the articular cartilages of synovial joints during movement.

Flexion:

The action of bending or the condition of being bent, especially of a joint or limb.

Extension:

An anatomical movement that increases the angle between two parts of the body, such as straightening an arm or leg