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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 jaw bone is also called the mandible. It is a long bone that includes your chin and angles up toward your ear on both sides of your face. On each side, the end of the jawbone is rounded like a ball. This ball, called the condyle, is the part of the jaw joint right in front of your ear. It lets you open and close your mouth. The jaw joint is also called the temporomandibular joint or TMJ. A fracture can happen anywhere along the jawbone. In more than 50% of cases, the jaw fractures in at least two places â a direct fracture where the jaw was hit and an indirect fracture somewhere else along the jaw.