NA03.0
category
Dislocation of jaw
Definition
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
Also indexed as
Dislocation of jawRecurrent dislocation of the jawSequelae of dislocation of jawdislocation of TMJ - [temporomandibular joint]dislocation of inferior maxilladislocation of mandibledislocation of temporomandibular jointhabitual dislocation of jawpseudo-dislocation of the TMJ (trauma)temporomandibular dislocationtraumatic dislocation of temporomandibular joint