Division of Otolaryngology-Head and Neck Surgery, Dalhousie University, Halifax, Nova Scotia, Canada.
Laryngoscope. 2011 May;121(5):1117-23. doi: 10.1002/lary.21398.
OBJECTIVES/HYPOTHESIS: To describe a new and fast surgical technique in treating superior semicircular canal dehiscence syndrome by resurfacing the canal defect via the transmastoid approach without retraction of the whole temporal lobe and to demonstrate the clinical and audiologic results of the superior canal dehiscence repair. Superior semicircular canal dehiscence syndrome is a well-described pathology. Surgical procedures through the middle fossa approach to resurface the superior canal and transmastoid plugging are considered the main surgical therapeutic options for patients with debilitating symptoms. Both have drawbacks; plugging is invasive to the inner ear, and resurfacing requires a middle fossa approach.
Retrospective review.
Four patients presented with classic symptomatic semicircular canal dehiscence syndrome with radiographic confirmation of their dehiscence. The patients underwent the resurfacing procedure with a transmastoid approach.
All four patients reported resolution of their symptoms. Audiograms documented some improvement in three subjects.
The transmastoid approach for resurfacing superior semicircular canal dehiscence is a safe and less-invasive technique than the standard middle fossa approach, which has many potential complications and requires much longer hospitalization. In our study, the surgeries were completed within 90 minutes, and patients stayed in the hospital only overnight.
目的/假设：通过经乳突入路对半规管裂进行表面修复，而不牵拉整个颞叶，来描述一种治疗上半规管裂综合征的新的、快速的手术技术，并展示上半规管裂修复的临床和听力结果。上半规管裂综合征是一种描述明确的疾病。通过中颅窝入路对上半规管进行表面修复的手术程序和经乳突填塞被认为是治疗症状严重的患者的主要手术治疗选择。这两种方法都有缺点；填塞对内耳有侵入性，而表面修复需要中颅窝入路。
回顾性研究。
4 名患者表现出典型的症状性半规管裂综合征，并通过影像学证实了他们的裂孔。这些患者接受了经乳突入路的表面修复手术。
所有 4 名患者均报告症状缓解。听力图记录了 3 名受试者的一些改善。
与标准的中颅窝入路相比，经乳突入路对上半规管裂进行表面修复是一种更安全、侵入性更小的技术，该标准中颅窝入路有许多潜在的并发症，需要更长的住院时间。在我们的研究中，手术在 90 分钟内完成，患者只住院一晚。
