T.M.J. (Temporomendibular joint)

Type: condylar type of synovial joint.

Bones: Temporal and mandible.

Ligaments: Capsular ligament and temporomendibular ligament.

Articular surface of the left temporomendibular joint

Movements:

Protraction - pterigoid muscle

Retraction - Digastric muscle, Massater muscle.

Dipration (Opening of mouth) - Lateral pterigoid muscle, infra hyoid muscle, digastric muscle.

Elevation of mandible - All muscles of the mastication.

Side to side movement of mandible -ipsilateral
pterigoid acting alternately.

Capsule of TMJ, Fibrous capsule and lateral ligament of the TMJ

Fibrous capsule and lateral ligament of the temporomandibular joint

Nerve supply: auriculo temporal nerve, Massetric nerve.

Applied:

1. Dislocation.

2. Fracture.

3. Damage to auriculotemporal nerve.

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