Joint cavity

Definition

A joint cavity is a fluid-filled space that exists between the articulating bones of a synovial joint, facilitating smooth movement and reducing friction. It is lined by the synovial membrane and contains synovial fluid.

Related terms

Synovial Fluid:

A viscous, egg white-like fluid found within the joint cavity, responsible for lubricating and nourishing the articular cartilages.

Articular Cartilage:

A smooth, white tissue that covers the ends of bones where they come together to form joints, reducing friction and acting as a shock absorber.

Synovial Membrane:

The inner lining of the joint capsule that secretes synovial fluid into the joint cavity