Dallas Ear Institute
7777 Forest Lane, Suite A-103, Dallas, TX 75230 | Phone: (972) 566-7600 | Fax: (972) 566-6560 | www.dallasear.com

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Posterior Semicircular Canal Occlusion

Surgical Procedure for BPPV:

In a minority of patients with BPPV, probably less than 5%, BPPV cannot be adequately controlled with particle-repositioning maneuvers, Brandt-Daroff exercises or even customized vestibular rehabilitation therapy. In such instances surgery may be indicated. Surgery cannot be undertaken for BPPV unless the correct ear and affected canal have been reliably identified. Surgery has only been described for the posterior semicircular canal, the most commonly affected. In theory, other canals could potentially be addressed, but the risks of hearing loss might be greater in certain circumstances.

The simplest and most reliable surgery is mechanical occlusion of the affected posterior semicircular canal. The canal is exposed via a mastoidectomy, drilling the bone behind the ear, and it is gently opened up and occluded with bone dust and/or other materials. In properly selected patients this procedure will be successful the vast majority of times. Recovery is typically rapid. Some motion-related imbalance may be experienced for a few weeks as the brain recovers from the loss of function from the one canal, but this is usually minor. There can also be a mild degree of hearing loss after the surgery, though this is usually temporary.  There is a risk of permanent hearing loss associated with this procedure, though this is rare.

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Adult Otology
Pediatric Otology
Neurotology / Skull Base Surgery
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Dallas Ear Institute
7777 Forest Lane, Suite A-103, Dallas, TX 75230 | Phone: (972) 566-7600 | Fax: (972) 566-6560 | www.dallasear.com