Superior Semicircular Canal Dehiscence Repair With Hydroxyapetite Cement via a Transmastoid Approach

Area of Science:

• Otolaryngology
• Neurosurgery
• Surgical Innovation

Background:

• Superior semicircular canal dehiscence (SSCD) is a condition causing auditory and vestibular symptoms.
• Surgical repair is often necessary to alleviate symptoms and prevent further complications.
• Traditional surgical approaches may involve significant risks and recovery times.

Purpose of the Study:

• To evaluate the efficacy and safety of SSCD repair using a transmastoid approach.
• To assess the use of hydroxyapatite bone cement for capping the dehiscence.
• To determine the failure and complication rates associated with this surgical technique.

Main Methods:

• Retrospective case series of patients diagnosed with SSCD between 2012 and 2022.
• All patients underwent SSCD repair via a transmastoid approach with hydroxyapatite capping.
• Dehiscence characteristics and surgical outcomes were analyzed, including symptom resolution and imaging findings.

Main Results:

• Twenty-two patients (25 ears) were included in the study.
• The transmastoid approach with hydroxyapatite capping demonstrated a low failure rate of 8.0%.
• Predominant dehiscence location was apical, with a mean size of 2.8 mm.

Conclusions:

• Transmastoid SSCD repair with hydroxyapatite bone cement is a viable and effective treatment option.
• This approach offers a lower complication rate compared to the middle fossa approach.
• This study represents the largest series for this specific surgical technique and material combination.