Surgical exposure in retrosigmoid approach: do we need cerebellar retractors?
2006
Background: The aim of this study was to present our technique of posterior fossa surgery and to evaluate whether cerebellar retractors are needed. Methods: Since March 1989, more than 500 surgeries were performed through retrosigmoid approach, and our surgical technique was described. The data were evaluated whether or not cerebellar retractors were used in the operations. Results: The surgeries were vestibular neurectomy, acoustic neuroma removal, and neurovascular decompression in 351, 135, and 14 patients, respectively. Cerebellar retractors have not been used in vestibular neurectomies and in most acoustic neuroma surgeries. The cerebellar retractors have been used in all of the neurovascular decompression surgeries where better exposure of the root entry zones of the cranial nerves is needed, and intracranial endoscopy is applied for further exposure and decompression of the vascular loop. Conclusion: There is no need for cerebellar retractors when adequate conditions such as patient positioning, adequate anesthesia techniques, and surgical manipulations are applied in posterior fossa approach except for neurovascular decompression and some of the acoustic neuroma surgeries.
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