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A broken jaw (or mandible fracture) is a common facial injury. Only the nose is broken more frequently. A broken jaw is the 10th most common fractured bone in the human body. Fractures (breaks in the bone) are generally the result of a direct force or trauma to the jawbone (mandible). A dislocated jawbone means that the temporomandibular joint (where the jaw connects with the skull) is moved out of place.
The jawbone may or may not be fractured, but even if there is no fracture, symptoms (listed below) may be similar to a jawbone fracture. Temporomandibular joint (TMJ) dislocation and syndrome is a topic of another article. The jawbone, or mandible is the largest and main bone of the lower part of the face. Figure 1 shows the various anatomic regions of the mandible viewed from the right side. The anatomic region helps to classify the location of the fracture while the terms listed below describe the type of fracture: