title: Two-bone flap craniotomy for the transpetrosal-presigmoid approach to avoid a bony defect in the periauricular area after surgery on petroclival lesions: technical note.
abstract: 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.
authors.affiliation: Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No. 6, Tian Tan Xi Li, Chong Wen District, Beijing, People's Republic of China, 100050.
authors.forename: Guijun
authors.initials: G
authors.lastname: Jia
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wu
authors.forename: Junting
authors.initials: J
authors.lastname: Zhang
authors.forename: Liwei
authors.initials: L
authors.lastname: Zhang
authors.forename: Xinru
authors.initials: X
authors.lastname: Xiao
authors.forename: Jie
authors.initials: J
authors.lastname: Tang
authors.forename: Guolu
authors.initials: G
authors.lastname: Meng
authors.forename: Sumin
authors.initials: S
authors.lastname: Geng
authors.forename: Weiqing
authors.initials: W
authors.lastname: Wan
mesh_terms: D000328:Adult; D000368:Aged; D001860:Bone Plates; D003392:Cranial Sinuses / Q000601:surgery; D003399:Craniotomy / Q000379:methods*; D004388:Dura Mater / Q000601:surgery; D005260:Female; D006487:Hemostasis; D006801:Humans; D007431:Intraoperative Complications / Q000097:blood / Q000517:prevention & control; D008297:Male; D008416:Mastoid / Q000601:surgery; D008579:Meningioma / Q000601:surgery; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000379:methods*; D010579:Petrous Bone / Q000601:surgery*; D011187:Posture; D012886:Skull / Q000000981:diagnostic imaging / Q000601:surgery*; D013523:Surgical Equipment; D013524:Surgical Flaps; D015503:Surgical Sponges; D013701:Temporal Bone / Q000601:surgery; D014025:Titanium; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D014025:Titanium
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