Articular disk
Encyclopedia
The articular disk is a thin, oval plate of fibrocartilage
present in several joints which separates synovial cavities. This separation of the cavity space allows for separate movements to occur in each space.
The presence of an articular disk also permits a more even distribution of forces between the articulating surfaces of bones, increases the stability of the joint, and aids in directing the flow of synovial fluid to areas of the articular cartilage that experience the most friction.
The term "meniscus
" has a very similar meaning.
Fibrocartilage
White fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions. It owes its flexibility and toughness to the former of these constituents, and its elasticity to the latter...
present in several joints which separates synovial cavities. This separation of the cavity space allows for separate movements to occur in each space.
The presence of an articular disk also permits a more even distribution of forces between the articulating surfaces of bones, increases the stability of the joint, and aids in directing the flow of synovial fluid to areas of the articular cartilage that experience the most friction.
The term "meniscus
Meniscus (anatomy)
In anatomy, a meniscus is a crescent-shaped fibrocartilaginous structure that, in contrast to articular disks, only partly divides a joint cavity. In humans it is present in the knee, acromioclavicular, sternoclavicular, and temporomandibular joints; in other organisms they may be present in other...
" has a very similar meaning.
See also
- Triangular fibrocartilageTriangular fibrocartilageThe Triangular fibrocartilage complex is formed by the triangular fibrocartilage discus , the radioulnar ligaments and the ulnocarpal ligaments .- Anatomy :Triangular fibrocartilage discus...
("articular disk of the distal radioulnar articulation") - Articular disk of the temporomandibular jointArticular disk of the temporomandibular jointThe articular disk is a thin, oval plate, placed between the condyle of the mandible and the mandibular fossa.Its upper surface is concavo-convex from before backward, to accommodate itself to the form of the mandibular fossa and the articular tubercle....
- Articular disk of sternoclavicular articulationArticular disk of sternoclavicular articulationThe articular disk of the sternoclavicular articulation is flat and nearly circular, interposed between the articulating surfaces of the sternum and clavicle....