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Mandibular fracture, also known as fracture of the jaw, is a break through the mandibular bone. In about 60% of cases the break occurs in two places. [ 1 ] It may result in a decreased ability to fully open the mouth. [ 1 ]
The communications of each pterygomandibular space are: [1] to the buccal space anteriorly; to the lateral pharyngeal space and peritonsillar space medially (around the medial pterygoid muscle). to the submasseteric space laterally (around the ramus of the mandible) to the parotid space posteriorly; to the deep temporal/infratemporal space ...
This is also referred to as the masseter space or the superifical masticator space. The submasseteric space is logically located under (deep to) the masseter muscle, created by the insertions of masseter onto the lateral surface of the mandibular ramus. Submasseteric abscesses are rare and are associated with marked trismus.
Most fractures here are caused by strokes (contusion or penetrating injuries). [2] Conservative management of minor fractures can lead to trismus (lockjaw) that can later only be corrected by removing the coronoid process. [1] For serious fractures, a surgery involving open reduction and internal fixation can have good outcomes. [1]
Sometimes mandibular fractures in the region of the angle of the mandible may cause an infection of the submasseteric space. [1] The signs and symptoms of a submasseteric abscess may include marked trismus (i.e. difficulty opening the mouth, since the masseter elevates the mandible and it becomes restricted) and swelling in the region of the ...
The temporomandibular ligament constrains the mandible as it opens, keeping the condyloid process close to the joint. [2] It prevents posterior displacement of the mandible. It also prevents the condyloid process from being driven upward by a blow to the jaw, which would otherwise fracture the base of the skull.
3D CT of mandible fracture. This injury involves the alveolar bone and may extend beyond the alveolus. [5] [6] There are five different types of alveolar fractures: Communicated fracture of the socket wall; Fracture of the socket wall; Dentoalveolar fracture (segmental) Fracture of the maxilla: Le Fort fracture, zygomatic fracture, orbital blowout
The mandible may be fractured at its symphysis, body, angle, ramus, and condyle. [4] The zygoma (cheekbone) and the frontal bone (forehead) are other sites for fractures. [13] Fractures may also occur in the bones of the palate and those that come together to form the orbit of the eye.