NA03.0
Dislocation of jaw
Luxação da mandíbula
CategoryDefinition
Displacement of the mandible, the largest and strongest bone of the face constituting the lower jaw. Dislocation of the temporomandibular joint is a painful condition that occurs when the mandibular condyle becomes fixed in the anterosuperior aspect of the articular eminence. TMJ dislocation is due to either trauma or, more commonly, excessive opening of the mandible. Spasm of the masseter, temporalis, and internal pterygoid muscles results in trismus, preventing return of the condyle to the temporal fossa.
Exclusions
- disc displacement (internal derangement of the TMJ)
Index Terms
Dislocation of jawdislocation of inferior maxilladislocation of mandibledislocation of temporomandibular jointtraumatic dislocation of temporomandibular jointtemporomandibular dislocationdislocation of TMJ - [temporomandibular joint]pseudo-dislocation of the TMJ (trauma)Recurrent dislocation of the jawhabitual dislocation of jawSequelae of dislocation of jaw