Two-bone flap craniotomy for the transpetrosal¨Cpresigmoid approach to avoid a bony defect in the periauricular area after surgery on petroclival lesions: technical note

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• 作者：Guijun Jia ; Zhen Wu ; Junting Zhang ; Liwei Zhang ; Xinru Xiao ; Jie Tang ; Guolu Meng ; Sumin Geng and Weiqing Wan
• 关键词：Two ; bone flap craniectomy ; Petroclival meningioma ; Petrosal approach ; Presigmoid approach
• 刊名：Neurosurgical Review
• 出版年：2010
• 出版时间：January, 2010
• 年：2010
• 卷：33
• 期：1
• 页码：121-126
• 全文大小：347.8 KB

文摘

The authors describe a two-bone-flap craniotomy technique to avoid the bone defect caused by the transpetrosal–presigmoid approach. Briefly, this technique includes three steps. The first step is to elevate a temporoparietal bone flap located superiorly to the transverse and sigmoid sinuses. The second step is to dissect the transverse and sigmoid sinuses away from the bone by inserting a gelatin sponge. This maneuver provides hemostasis and protects the sinuses from injury. The third step is to cut a second bone flap including part of the temporal bone and the outer table of the mastoid bone with a high-speed drill system. After the operation, the two bone flaps are fixed in place with titanium osteosynthesis fixation material. This approach provides a simple, easy, and safe technique for the transpetrosal–presigmoid approach. The technique has been performed in 83 patients treated for petroclival neoplasms with excellent cosmetic results.