T.M.J. (Temporomendibular joint)
Type: condylar type of synovial joint.
Bones: Temporal and mandible.
Ligaments: Capsular ligament and temporomendibular ligament.
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| 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.
pterigoid acting alternately.
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| 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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