Trauma commonly occurs when the face strikes a part of the vehicles interior, such as the steering wheel. In addition, airbags can cause corneal abrasions and lacerations (cuts) to the face when they deploy. Diagnosis
Radiography, imaging of tissues using X-rays, is used to rule out facial fractures. Angiography (X-rays taken of the inside of blood vessels) can be used to locate the source of bleeding. However the complex bones and tissues of the face can make it difficult to interpret plain radiographs; CT scanning is better for detecting fractures and examining soft tissues, and is often needed to determine whether surgery is necessary, but it is more expensive and difficult to obtain. CT scanning is usually considered to be more definitive and better at detecting facial injuries than X-ray. CT scanning is especially likely to be used in people with multiple injuries who need CT scans to assess for other injuries anyway. 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 condyle. The zygoma (cheekbone) and the frontal bone (forehead) are other sites for fractures. Fractures may also occur in the bones of the palate and those that come together to form the orbit of the eye.
Myospherulosis, also known as spherulocytosis, is a foreign body-type granulomatous reaction to lipid-containing material and blood.It may be seen in various settings including: 

Fat necrosis. Malignancy, e.g. renal cell carcinoma. Placement of topical tetracycline in a petrolatum base into a surgical site.The resultant histopathologic pattern is most unusual and initially was mistakenly thought to represent a previously undescribed endosporulating fungus. See also
Fat necrosis


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