What is an articular disk?
What is an articular disk?
The articular disk is a thin, oval plate, placed between the condyle of the mandible and the mandibular fossa. It divides the joint into two cavities, each of which is furnished with a synovial membrane.
What are the functions of articular disc in TMJ?
The articular disc in the TMJ has an important functional role. It fills the space between the condyle and the temporal bone, and acts as a stress absorber and distributors during the jaw activity.
What is another name for articular disc?
Fibrocartilaginous plate that separates the temporomandibular joint into upper and lower cavities. Synonym(s): mandibular disc.
Why is articular disc important?
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.
What is the articular disc made of?
fibrocartilage
The articular disc of the temporomandibular joint (TMJ) is composed of fibrocartilage and the extracellular matrix of this disc is composed mainly of collagen, glycosaminoglycan and proteoglycans.
What is the function of articular cartilage?
Articular cartilage is a thin layer of specialized connective tissue with unique viscoelastic properties. Its principal function is to provide a smooth, lubricated surface for low friction articulation and to facilitate the transmission of loads to the underlying subchondral bone.
What are the functions of articular cartilage?
Where is the articular disc the thinnest?
The articular disk of the temporomandibular joint is a thin, oval plate made of non-vascular fibrous connective tissue, which is located between the mandible’s condyloid process and the cranium’s mandibular fossa….
| Articular disk of the temporomandibular joint | |
|---|---|
| TA98 | A03.1.07.002 |
| TA2 | 1623 |
| FMA | 57059 |
| Anatomical terminology |
Can you live without articular cartilage?
If there was no articular cartilage the bone surfaces would rapidly wear away due the friction that occurs when bone rubs against bone. Articular cartilage is self-lubricating because of its high fluid content which gives it the lowest coefficient of friction of any natural or man-made material.
How is articular cartilage damage treated?
Surgery is often the best treatment option for damaged articular cartilage since it does not heal well on its own. Some surgeries aim to relieve symptoms, while other surgical procedures are intended to repair and restore damaged articular cartilage.
Where is articular cartilage located and what is its function?
Articular cartilage is found only in diarthroidal joints (synovial joints), and is comprised of hyaline cartilage – a particularly smooth type of cartilage which allows for easy articulation, increased weight distribution, and shock absorption.
Will TMJ disc go back into place?
The most frequent displacement of the disc is anterior to the mandibular condyle however, in rare cases it can be posteriorly. The prognosis for these conditions is good and normally recover with minimal intervention or conservative management.
What is the articular disk of the mandible made of?
Sagittal section of the articulation of the mandible (articular disk visible at center) [edit on Wikidata] The articular disk is a thin, oval plate, which is made from fibrous connective tissue, non vascular, placed between the condyle of the mandible and the mandibular fossa.
Is the articular disc part of the temporomandibular joint?
Articular disc – The articular disc is a fibrous extension of the capsule that runs between the two articular surfaces of the temporomandibular joint. The disc articulates with the mandibular fossa of the temporal bone above and the condyle of the mandible below. The disc divides the joint into two sections, each with its own synovial membrane.
Where is the articular disc located in the body?
Articular disc – The articular disc is a fibrous extension of the capsule that runs between the two articular surfaces of the temporomandibular joint. The disc articulates with the mandibular fossa of the temporal bone above and the condyle of the mandible below.
What is the medical definition of a disc?
[disk] a circular or rounded flat plate; often spelled disc in names of anatomic structures. articular disk a pad of fibrocartilage or dense fibrous tissue present in some synovial joints. Bowman’s disk one of the flat plates making up a striated muscle fiber.