Presented at the 64th Annual Meeting of the Canadian Society of Otolaryngology–Head and Neck Surgery, Niagara Falls, Ontario, Canada, May 23–25, 2010.
Article first published online: 25 APR 2011
Copyright © 2011 The American Laryngological, Rhinological, and Otological Society, Inc.
Volume 121, Issue 5, pages 1117–1123, May 2011
How to Cite
Amoodi, H. A., Makki, F. M., McNeil, M. and Bance, M. (2011), Transmastoid resurfacing of superior semicircular canal dehiscence. The Laryngoscope, 121: 1117–1123. doi: 10.1002/lary.21398
This work was carried out by all of the authors at Dalhousie University, Halifax, Nova Scotia, Canada. The authors have no funding, financial relationships, or conflicts of interest to disclose.
- Issue published online: 25 APR 2011
- Article first published online: 25 APR 2011
- Accepted manuscript online: 4 JAN 2011 03:45PM EST
- Manuscript Accepted: 1 SEP 2010
- Manuscript Received: 16 AUG 2010
- Superior semicircular canal;
- dehiscence syndrome;
- Level of Evidence: 4.
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.
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.