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Key Image

Axial and coronal CT images of the head, through the level of the mandible condyles.

Key Findings

Nondisplaced fracture through the right mandibular condyle (yellow circle). This bony element remains within its joint space. On the left, the mandibular condyle is fractured and displaced medially and anteriorly from its joint space (red circle).

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Diagnosis

Bilateral mandibular condyle fractures

Discussion

It is estimated that 30% of mandible fractures occur at the condyle. Given the unique geometry of the mandible and temporomandibular joints (TMJs), these fractures can result in marked pain, dysfunction, and deformity if not recognized and treated appropriately. These fractures may be associated with other injuries that alone have significant morbidity. Examples of such injuries include but are not limited to facial nerve injuries, C-spine injuries, displacement of the mandibular condyle into the middle cranial fossa, injuries to the external auditory canal, and occlusion of the internal carotid artery.

References / Resources

Additional Information:

1. Dahnert*: #
2. Primer*: #
3. Related Article:

   Kim Goldman et al, "Mandibular Condylar and Subcondylar Fractures" eMedicine August 2012: http://emedicine.medscape.com/article/870075-overview#a1.

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