J Neurol Surg B Skull Base 2022; 83(S 01): S1-S270
DOI: 10.1055/s-0042-1743707
Presentation Abstracts
Podium Abstracts

IQ Dome: A Novel Surgical Sealing Method for Superior Semicircular Canal Dehiscence Repair

Anjali Pradhan
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Mahlet Mekonnen
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Ariana Chow
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Farinaz Ghodrati
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Khashayar Mozaffari
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Courtney Duong
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Quinton Gopen
2   Department of Head and Neck Surgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
,
Isaac Yang
1   Department of Neurosurgery at Ronald Reagan UCLA Medical Center, Los Angeles, California, United States
› Author Affiliations
› Further Information
 

Objective: Superior semicircular canal dehiscence (SSCD) is characterized by an aberrant bony defect between the floor of the middle cranial fossa and the superior semicircular canal. This rare skull base disorder results in the development of a “third mobile window” and clinically manifests in debilitating auditory and vestibular symptoms that indicate surgical management. Traditional methods of SSCD repair include plugging, resurfacing, and capping of the superior semicircular canal. Sealing of the canal with bone wax is a recent, revised technique of resurfacing that was introduced for SSCD repair. The authors of this study present a novel approach to surgical sealing for SSCD repair with IQ dome, a titanium mesh plate that overlies the arcuate eminence, as an effective method for SSCD repair with middle fossa craniotomy.The aim of this study was to evaluate and highlight IQ dome as a new repair technique for surgical sealing of the semicircular canal in SSCD patients.

Methods: A retrospective analysis of patients undergoing SSCD surgical sealing repair with IQ dome at a single institution was conducted. Data including patient demographics, pre- and postoperative symptoms, neuroimaging, physiologic testing, neurological examination findings, neurosurgical technique, surgical complications, surgical outcomes, and follow-up length was extracted from medical chart review. All patients received SSCD repair with IQ dome by a single neurosurgeon and otolaryngologist pair.

Results: A total of 169 patients with SSCD were surgically repaired at our institution from June 2020 to August 2021. Of those 169 patients, 78 received SSCD repair through middle fossa craniotomy with the novel IQ Dome method. 31 (39.7%) patients were male and the remaining 47 (60.3%) patients were male. No surgical complications were documented.

Conclusion: IQ dome might offer an alternative surgical sealing repair intervention for SSCD. This novel method may help improve outcomes in patients who undergo SSCD repair with middle fossa craniotomy for sealing of the semicircular canal with IQ dome. However, future studies examining SSCD patients who have been repaired with IQ dome compared to SCCD patients who have been repaired with traditional surgical sealing methods needs to be conducted to more completely assess the potential of IQ dome.



Publication History

Article published online:
15 February 2022

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