[Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation]

[Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation] Research Abstract Details 

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[Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation] Abstract Text:

Chen-Yi Wu,Qing Lan,

OBJECTIVE: To design a new supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation system, and to explore the possibility of removing the approach-correlated bone precisely. METHODS: Navigation data were established on 8 cadaveric heads fixed by formalin and perfused intracranial vessels with colored silicone. Before the operation, the important structures were outlined with different colors in the navigation system. A 7-cm "C" shape skin incision was performed 1cm behind the helix. On elevating the skin flap and musculofascial flap respectively, a 3.5 cm x 3 cm bone window was performed. After skeletonized the sigmoid sinus, bony labyrinth and the canal for facial nerve assisted by neuro-navigation, the amount of dura exposed and the maximal angle of vision were measured before and after partial labyrinthectomy with petrous apicectomy, the anatomic structures were observed as well. RESULTS: The incision of the supra-infratentorial retrolabyrinthine keyhole approach fully met the needs of the presigmoid partial labyrinthectomy keyhole approach. The approach-correlated bone could precisely be drilled with the aid of neuro-navigation, which could avoid the bewilder in drilling process. This approach provided wide exposure to petroclival region, cerebellopontine angle, prepontine region and posterior cavernous sinus. After partial labyrinthectomy with petrous apicectomy, the horizontal exposure was increased to (18.8 +/- 1.6) mm (left side) and (17.7 +/- 1.2) mm (right side); the maximal angle of vision was increased to (59.3 +/- 9.2) degrees (left side) and (57.0 +/- 11.0) degrees (right side); the vertical exposure increased (10.0 +/- 1.0) mm (left side) and (10.0 +/- 0.8) mm (right side); there were significant differences between before and after partial labyrinthectomy with petrous apicectomy (P < 0.01). CONCLUSION: It is feasible to perform the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach. The exposed field and the maximal angle of vision can be obviously increased by partial labyrinthectomy with petrous apicectomy.

[Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation] Publishing Authors By Initials

CY Wu,Q Lan,

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[Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation] Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Zhonghua yi xue za zhi

VOLUME: 87

Page Numbers: 606-10

Journal Abbreviation: Zhonghua Yi Xue Za Zhi

ISSN: 0376-2491

DAY: 6

MONTH: Mar

YEAR: 2007

[Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation] Information

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LANGUAGE: chi

NlmUniqueID: 7511141

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Grant and Affiliation Information for [Anatomic study of the supra-infratentorial presigmoid partial labyrinthectomy keyhole approach assisted by neuro-navigation]

AFFILIATION: Department of Neurosurgery, Affiliated Second Hospital, Soochow University, Suzhou 215004, China.

Country: China

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MEDLINETA: Zhonghua Yi Xue Za Zhi

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