Early identification of temporal bone trauma is essential to managing the injury and avoiding complications. Hearing loss is of course not a life-threatening event. The temporal bone contributes to the lower lateral walls of the skull. Longitudinal fractures make up 70 to 90% of temporal bone fractures, and transverse fractures make up 10 to 30%. Transcript PPT Temporal Bone Fractures - UCLA Head and Neck Surgery Temporal Bone Fractures and Surgical Approaches for CSF Leaks Arthur Wu, MD UCLA Division of Head and Neck Surgery Incidence and Epidemiology • Blunt head trauma typically MVA • Penetrating trauma eg. Author information: (1)Department of Otolaryngology-Head and Neck Surgery, University of Virginia, Charlottesville, VA 22908, USA. The fracture line parallels the long axis of the petrous pyramid. Longitudinal fractures can extend through the middle ear and rupture the tympanic membrane; they … Temporal bone fractures have been classified by orientation with respect to the long axis of the petrous portion of the temporal bone. TYPES OF FRACTURES. There are a number of openings and canals in the temporal bone through which structures enter and exit the cranial cavity. 1) Understand the pathophysiology of facial nerve damage in temporal bone trauma. In addition to potentially damage to hearing and the facial nerve, associated intracranial injuries, such as extra-axial hemorrhage, diffuse axonal injury and cerebral contusions are common. Ear-related disorders are commonly seen, such as vertigo or hearing loss.
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Longitudinal fractures make up 70 to 90% of temporal bone fractures, and transverse fractures make up 10 to 30%. Transverse fracture of the left temporal bone with ossicular injury in a 39-year-old man. Other symptoms include bleeding from the ear and … It contains the middle and inner portions of the ear, and is crossed by the majority of the cranial nerves. the temporal bone fractures. Temporal bone fractures were previously classified as longitudinal or transverse. This is the American ICD-10-CM version of S02.19XA - other international versions of ICD-10 S02.19XA may differ. Some fractures may have characteristics of both patterns.
This can lead to a number of serious complications, including damage to hearing, vertigo, facial paralysis (due to damage to the facial nerve), and bleeding in the ear as well as bone bruising. The Weber and Rinne tuning fork tests can be done during the initial physical examination in conscious patients to help differentiate between conductive and sensorineural hearing loss. On the other hand, the otic capsule-based system did demonstrate statistically significant predictive ability (P < .001). Air attenuation is seen within the cochlea.
Longitudinal fractures can extend through the middle ear and rupture the tympanic membrane; they … Download premium images you can't get anywhere else. The PowerPoint PPT presentation: "Temporal Bone" is the property of its rightful owner. A total of 84 patients with 89 fractures of the temporal bone were examined with high resolution CT (HRCT) a few hours to 21 months after the initial trauma. ... Management of Complications from 820 Temporal Bone Fractures.
Axial (a) and coronal (b) CT images show a fracture line (fx) (arrowheads in a, arrows in b) perpendicular to the long axis of the left petrous bone, traversing the IAC and bony labyrinth. Temporal bone fractures may be complicated by intracranial haemorrhage, C.S.F.