Hearing loss in skull fractures

Area of Science:

• Otolaryngology
• Neurology
• Radiology

Background:

• Head trauma, particularly skull fractures involving the temporal bone, is a significant cause of hearing impairment.
• Understanding the relationship between fracture patterns and auditory deficits is crucial for effective patient management.

Purpose of the Study:

• To review cases of temporal bone fractures and analyze the types of hearing loss observed.
• To correlate specific fracture types with different categories of hearing loss.
• To investigate the challenges in identifying the cause of central sensorineural hearing loss from imaging.

Main Methods:

• Retrospective review of 103 patients with skull fractures around the temporal bone.
• Analysis of audiological outcomes and correlation with imaging studies, including skull series, computed tomographic (CT) head scans, and polytomography of the temporal bone.

Main Results:

• Hearing loss in head trauma was categorized into conductive, peripheral sensorineural, central sensorineural, and combined types.
• The etiology of conductive and peripheral sensorineural hearing loss was frequently identifiable based on the temporal bone fracture pattern.
• Correlation between central sensorineural hearing loss and brain lesions visualized on CT scans proved more challenging.

Conclusions:

• Temporal bone fracture characteristics are valuable in diagnosing the cause of conductive and peripheral sensorineural hearing loss.
• Further investigation is needed to elucidate the mechanisms and imaging correlations for central sensorineural hearing loss following head trauma.