Canis ISSN: 2398-2942

Temporomandibular joint: fracture

Synonym(s): TMJ, zygomatic arch, zygoma, coronoid process, mandibular condyle, mandibular fossa, ankylosis, pseudoankylosis, zygomectomy, coronoidectomy

Contributor(s): Alexander M Reiter

Introduction

  • Cause: motor-vehicle trauma, fall from a height, animal bite, hit by an object.
  • Signs: pain, difficulty opening or closing the mouth, crepitation.
  • Diagnosis: history of trauma; clinical signs; diagnostic imaging showing fracture of bones that form the temporomandibular joint (TMJ) or associated structures (ie zygomatic arch, coronoid process, etc).
  • Treatment: conservative treatment (monitoring); non-rigid maxillomandibular fixation (tape muzzle, labial reverse sutures, or commissuroplasty); retrieval of fracture fragments; condylectomy.
  • Prognosis: greatly depending on the location and extent of TMJ fracture and presence/absence of ankylosis and pseudoankylosis.

Pathogenesis

Etiology

  • Motor-vehicle trauma, fall from a height, animal bite, hit by an object.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • Lantz G C, Verstraete F J M (2012) Fractures and luxations involving the temporomandibular joint. In: Verstraete FJM, Lomer MJ (eds): Oral and Maxillofacial Surgery in Dogs and Cats. Philadelphia, WB Saunders, pp 321-332.
  • Reiter A M, Lewis J R (2011) In: Drobatz K, Beal MW, Syring RS (eds): Manual of Trauma Management in the Dog and Cat. Ames,Wiley-Blackwell, pp 255-278.


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