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Temporal bone fractures: traditional classification and clinical relevance
Stacey L Ishman1, David R Friedland
1Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, U.S.A.
The Laryngoscope
|September 30, 2004
Summary
Traditional temporal bone fracture classifications poorly predict clinical outcomes. An alternative petrous versus nonpetrous classification better correlates with serious complications like facial nerve injury and cerebrospinal fluid leaks.
Area of Science:
- Radiology
- Neurosurgery
- Otolaryngology
Background:
- Traditional temporal bone fracture classifications lack clinical relevance.
- A need exists for a more effective classification system.
Purpose of the Study:
- Evaluate traditional temporal bone fracture radiographic descriptors.
- Investigate an alternative fracture classification scheme's efficacy.
Main Methods:
- Retrospective case series of 155 temporal bone fractures.
- Correlation of fracture types with clinical presentation and outcomes using computed tomography scans.
Main Results:
- Traditional classification poorly correlated with facial nerve weakness, cerebrospinal fluid leakage, conductive, and sensorineural hearing loss.
- An alternative petrous vs. nonpetrous classification showed better correlation with clinical sequelae.
- Petrous fractures were significantly associated with cerebrospinal fluid leaks, facial nerve injury, and sensorineural hearing loss.
Conclusions:
- Traditional temporal bone fracture descriptions have limited clinical relevance.
- Distinguishing petrous from nonpetrous involvement significantly correlates with serious fracture sequelae.
- A simplified, radiographically based classification improves focus on likely complications.