TMJ is a synovial, condylar and hinge-type joint. The joint involves fibrocartilaginous surfaces and an articular disc which divides the joint into two cavities. These superior and inferior articular cavities are lined by separate superior and inferior synovial membranes.
- The temporomandibular ligament
- The stylomandibular ligament
- The oto-mandibular ligaments are the discomalleolar ligament
A variety of movements occur at the TMJ. These movements are mandibular depression, elevation, lateral deviation (which occurs to both the right and left sides), retrusion and protrusion.
The muscles that act on the TMJ are innervated by the mandibular nerve (CN V), the facial nerve (CN VII), C1, C2 and C3.