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- W2344184215 abstract "Objective: To observe micro-anatomic structure of cerebellopontine angle(CPA)in posterior skull base via suboccipital-retrosigmoid keyhole approach, then provide an anatomic basis and a morphologic basis for surgical localization. Methods: 8 adult skulls of 16 sides were used to observe and measure the spatial relationship between the bone marks and definite the most appropriate location of the suboccipital-retrosigmoid keyhole;8 formalin-fixed adult cadaveric heads of 16 sideswere used for simulating suboccipital-retrosigmoid keyhole approach to observe micro-anatomic basis, the major anatomic structures of this region were precisely measured and taken photographes. Results: 1:The approprite keyhole locationwas 3.0～4.0cm long behind ear, the superior extremity being the star spot. The skull window was located posterior to star spot,which was 2.0～2.5cm in diameter. This region could sufficiently expose the structures in the Cerebellopontine angle (CPA).2:The operative corridor was between the subdura and epiarachnoed space, which was located posterior to the petrous bone, anterolateral to the cerebella, and anterior to flocculus. Although the pathwaywas narrow, the operation field was greater, which could reach the abudcent nerve superiorly, and jugular foramen inferiorly. Conclusion: Being familiar with the spatial relationship of anatomic structures in CPA could help us successfully arrive at anatomic goals. The key to a successful operation lies in the knowledge of the related anatomic structures and skillfully micro-neurosurgical techniques. It could help us remove tumor well , protect important structures of brain, reduce injure,and decreas mortality rate and damage rate." @default.
- W2344184215 created "2016-06-24" @default.
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- W2344184215 date "2010-01-01" @default.
- W2344184215 modified "2023-09-27" @default.
- W2344184215 title "Observation of micro-anatomic structure of cerebellopontine angle under endoscope and microscope : Via retrosigmoid keyhole approach" @default.
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