Articular disc

from Wikipedia, the free encyclopedia
Joint with joint disc

A discus articularis (or also Fibrocartilago interarticularis from Latin articular disc) is an inter- joint disc (similar to the menisci ) made up of fibrous cartilage and tight, parallel- fiber connective tissue , which usually divides the joint cavity into two separate chambers.

Joint discs are usually free of nerves and blood vessels ; they are nourished by diffusion from the joint fluid ( synovia ).


Joint discs have several tasks. They serve to enlarge the contact area between the joint parts. Furthermore, they compensate for inequalities ( incongruences ) of the joint surfaces and additionally buffer and distribute the pressure on the joint . They also help guide the joint head in the socket.


Typical examples of flexible disks are located

While the first three are absent in most mammals , the joint disc is formed in the temporomandibular joint in all mammals. Disci are already used in fish, e.g. B. on the upper jaw in barbed fish .

See also

The articular disc should not with a intervertebral disc ( disc be confused).