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Facial trauma, also called maxillofacial trauma, is any physical trauma to the face. Facial trauma can involve soft tissue injuries such as burns, lacerations and bruises, or fractures of the facial bones such as nasal fractures and fractures of the jaw, as well as trauma such as eye injuries. Symptoms are specific to the type of injury; for example, fractures may involve pain, swelling, loss of function, or changes in the shape of facial structures. Facial injuries have the potential to cause disfigurement and loss of function; for example, blindness or difficulty moving the jaw can result. Although it is seldom life-threatening, facial trauma can also be deadly, because it can cause severe bleeding or interference with the airway; thus a primary concern in treatment is ensuring that the airway is open and not threatened so that the patient can breathe. Depending on the type of facial injury, treatment may include bandaging and suturing of open wounds, administration of ice, antibiotics and pain killers, moving bones back into place, and surgery. When fractures are suspected, radiography is used for diagnosis. Treatment may also be necessary for other injuries such as traumatic brain injury, which commonly accompany severe facial trauma. In developed countries, the leading cause of facial trauma used to be motor vehicle accidents, but this mechanism has been replaced by interpersonal violence; however auto accidents still predominate as the cause in developing countries and are still a major cause elsewhere. Thus prevention efforts include awareness campaigns to educate the public about safety measures such as seat belts and motorcycle helmets, and laws to prevent drunk and unsafe driving. Other causes of facial trauma include falls, industrial accidents, and sports injuries. ==Classification== Soft tissue injuries include abrasions, lacerations, avulsions, bruises, burns and cold injuries.〔 Commonly injured facial bones include the nasal bone (the nose), the maxilla (the bone that forms the upper jaw), and the mandible (the lower jaw). The mandible may be fractured at its symphysis, body, angle, ramus, and condoyle.〔 The zygoma (cheekbone) and the frontal bone (forehead) are other sites for fractures.〔Neuman MI, Eriksson E (2006). pp. 1480–81.〕 Fractures may also occur in the bones of the palate and those that come together to form the orbit of the eye. At the beginning of the 20th century, René Le Fort mapped typical locations for facial fractures; these are now known as Le Fort I, II, and III fractures (right).〔 Le Fort I fractures, also called Guérin or horizontal maxillary fractures,〔.〕 involve the maxilla, separating it from the palate.〔 Le Fort II fractures, also called pyramidal fractures of the maxilla,〔.〕 cross the nasal bones and the orbital rim.〔 Le Fort III fractures, also called craniofacial disjunction and transverse facial fractures,〔.〕 cross the front of the maxilla and involve the lacrimal bone, the lamina papyracea, and the orbital floor, and often involve the ethmoid bone.〔 are the most serious.〔.〕 Le Fort fractures, which account for 10–20% of facial fractures, are often associated with other serious injuries.〔 Le Fort made his classifications based on work with cadaver skulls, and the classification system has been criticized as imprecise and simplistic since most midface fractures involve a combination of Le Fort fractures. Although most facial fractures do not follow the patterns described by Le Fort precisely, the system is still used to categorize injuries.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「facial trauma」の詳細全文を読む スポンサード リンク
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