Collagen Matrix Dural Repair for the Internal Auditory Canal in Retrosigmoid Vestibular Schwannoma Surgery

Multilayer DuraGen repair of the IAC wall appears to be safe and feasible, with a low CSF leak rate, particularly in type B patients. The extent of mastoid air cell exposure seems to be a key determinant of leak risk. Cost considerations vary internationally, and the findings should be regarded as preliminary. Prospective multicenter studies are warranted to confirm efficacy and cost-effectiveness.