Articular disc

Articular Disc

The Articular Disc (pronounced: ar-tic-u-lar disc) is a fibrocartilaginous structure found in certain joints in the human body. It plays a crucial role in the biomechanics of the joint by providing cushioning and facilitating smooth movement.

Etymology

The term "Articular Disc" is derived from the Latin words "articulus" meaning joint, and "discus" which refers to a round, flat object.

Function

The primary function of the Articular Disc is to provide cushioning between the bones of a joint, reducing friction and preventing wear and tear. It also helps to evenly distribute the forces exerted on the joint during movement.

Location

Articular Discs are found in several joints in the body, including the temporomandibular joint (TMJ), the sternoclavicular joint, and the distal radioulnar joint.

Related Terms

Fibrocartilage: A type of cartilage that contains fibrous bundles of collagen, such as that found in the intervertebral discs and the menisci of the knees.
Temporomandibular Joint: The joint that connects the lower jaw (mandible) to the skull (temporal bone) in front of the ear. It includes an articular disc.
Sternoclavicular Joint: The joint that connects the sternum (breastbone) with the clavicle (collarbone). It includes an articular disc.
Distal Radioulnar Joint: The joint located near the wrist, where the two forearm bones (radius and ulna) meet. It includes an articular disc.