Mikulec Anthony A, Poe Dennis S
Department of Otology and Laryngology, Harvard Medical School/Massachusetts Eye and Ear InfirmaryBoston, Massachusetts 02114, USA.
Laryngoscope. 2006 Mar;116(3):375-8. doi: 10.1097/01.mlg.0000200358.93385.5c.
The objective of this study was to describe the operative management of posterior canal dehiscence.
A transmastoid approach to and plugging of the posterior canal was performed for posterior semicircular canal dehiscence (PSCD).
Postoperatively, the patient exhibited improvement in conductive hearing loss and vestibular symptoms.
PSCD can cause symptoms identical to that of superior semicircular canal dehiscence. Successful PSCD plugging can be performed without visualization of the actual area of dehiscence.
本研究的目的是描述后半规管裂隙的手术治疗。
采用经乳突入路对后半规管裂隙（PSCD）进行后半规管封堵。
术后，患者的传导性听力损失和前庭症状有所改善。
PSCD可引起与上半规管裂隙相同的症状。在未直视实际裂隙区域的情况下，PSCD封堵术也可成功实施。
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