事实上，枕骨可供固定的区域有限，如果进行枕骨下颅骨切除术，则会进一步受限，这对现有的固定技术构成挑战。

In fact, the area available for the implant fixation is limited and can be restricted further when a suboccipital craniectomy has been performed, posing a challenge to current fixation techniques.

youdao

事实上，枕骨可供固定的区域有限，如果进行枕骨下颅骨切除术，则会进一步受限，这对现有的固定技术构成挑战。

In fact, the area available for the implant fixation is limited and can be restricted further when a suboccipital craniectomy has been performed, posing a challenge to current fixation techniques.

youdao