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Articular Capsule of Temporomandibular Joint
Connective Tissue

Articular Capsule of Temporomandibular Joint

Capsula articularis articulationis temporomandibularis

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Structure

An articular capsule surrounds the entire temporomandibular joint. The fibers of the inferior portion of the capsule are tight and connect the condyle of the mandible to the articular disc. The upper portion of the capsule is looser, these fibers attach the articular disc to the temporal bone. Laterally the joint capsule is strengthened by the lateral ligament of the temporomandibular joint.

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Function

The articular capsule of the temporomandibular joint ensures that the joint is sealed, thus, keeping the lubricating synovial fluid within the joint. It provides passive stability to the joint by limiting the joint movement. Additionally, it provides active stability by containing numerous proprioceptive nerve endings which relay mechanical information back to the central nervous system (Ralphs & Benjamin, 1994).

References

Ralphs, J. R. & Benjamin, M. (1994) The joint capsule: structure, composition, ageing and disease. Journal of Anatomy, 184(Pt 3), 503-509.

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Temporomandibular Joint

ScienceDirect image

TMJ dislocation (open lock) occurs when the condyle achieves a position anterior and superior to the crest of the articular eminence during jaw motion.

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