结论枕髁的形态学变异较大。
Conclusion Great morphometric variations were found in occipital condyle.
结果：寰枕关节面不同的比例关系，决定枕髁的磨除范围。
Results: Different ratio relations to atlantooccipital joint interfaces were decided for condylar extension drilled.
结果JF位于颅底枕髁的前外侧和岩骨的后内侧，左右各一。
Results: The JF located between the petrosal bone and occipital bone and each side had one .
结果乳突、乳孔、颈静脉窝、枕髁都是重要的术中解剖学标志。
Results Mastoid process, jugular fossa, and occipital condyle were important signs.
对于中、大型枕髁病人，磨除枕髁后可提供更大的观察视角，因此宜采用远外侧经髁入路。
For those with middle and big condylar, partial resection of condylar will offer a wider exposing angle, thus the far lateral transcondylar approach seems necessary.
对于中、大型枕髁病人，磨除枕髁后可提供更大的观察视角，因此宜采用远外侧经髁入路。
For those with middle and big condylar, partial resection of condylar will offer a wider exposing angle, thus the far lateral transcondylar approach seems necessary.
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