当穿刺针安全插到位后，在神经根离开椎间孔的部位，即两个椎体相连接处侧面的开口处进行二次注射。 。

Once the needle is safely positioned, there is a second injection into the nerve root where it exits the foramen, a side opening where two vertebrae meet.

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如果骨折累及坐骨大孔或髋臼后柱则可引起坐骨神经损伤。

Sciatic nerve injuries may occur if the fracture involves the greater sciatic notch or the posterior acetabulum.

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面神经由茎乳孔出颅后，经腮腺、咬肌和颊区三段分布于面肌。

Facial nerve was divided into three segments (parotid gland, masseter and cheek) after leaving skull from stylomastoid foramen.

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