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15 Cards in this Set

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  • Back
Hinge joint formed by the mandibular condyle (covered by dense fibrous CT) and the inferior disc surface
Lower Joint of TMJ
Gliding joint formed by the articular eminence (covered by fibrocartilage) and the superior disc surface
Upper Joint of TMJ
Thickest, innervated and vascularized, sits between condyle and mandibular fossa
Posterior division of intra-articular disc
thinnest, no innervation, weight bearing surface, sits between condyle and temporal bone
intermediate division of intra-articular disc
intermediate thickness, innervated and vascularized
anterior division of intra-articular disc
attached to bone, joint capsule, and tendon of lateral pterygoid muscle (superior head)
anterior attachment of disc
attached to the bilaminar retrodiscal tissue
posterior attachment of disc
attaches posteriorly to the temporal bone
superior lamina
attaches to the neck of the mandibular condyle
inferior lamina
The bilaminar retrodiscal tissue is designed as a _______ anchor to limit _______ translation of the disc.
Designed as a POSTERIOR anchor to limit ANTERIOR translation
TMJ joint capsule is loose _______, and tight ________.
Loose - Anterior/Posterior

Tight - Medial/Lateral
Lateral ligament for stability of joint and disc
tempromandibular ligament
help attach mandible to cranium and limit extreme movements of TMJ
sphenomandibular and stylomandibular ligaments
movement in lower joint space; the mandibular condyles roll on the inferior surface of disc; this occurs during first < 50% of opening
rotation
movement in upper joing space, the condyle AND disc slide together; added rotation during last <50% for full opening
translation