腰背部肌肉长期紧张可以导致梨状肌症候群，梨状肌的问题反过来又可以导致坐骨神经炎。
For example, tense lower-back muscles can contribute to piriformis syndrome which in turn can cause inflamation of the sciatic nerve.
结论：坐骨神经与梨状肌的变异、梨状肌病变及“双门槛”狭窄等，均是构成坐骨神经尤其腓总神经卡压损伤的重要因素。
Conclusions: the variation of sciatic nerve and piriformis, piriformis diseases and the narrow of "double threshold" are the main reasons for sciatic nerve, especially common peroneal nerve injury.
坐骨神经经过骨盆上称为坐骨大孔的开口，通常走行于梨状肌的下方，因此梨状肌的疾患或痉挛或导致与坐骨神经痛症状相似的腿痛。
The sciatic nerve travels through an opening in the pelvis called the greater sciatic foramen, and typically runs below the piriformis muscle.
采用解剖器械对臀区进行由浅入深的解剖，分离出梨状肌上下孔的神经、血管。
The buttock of corpses were dissected from the superficial to the deep by the anatomic instrument, separating the nerves, blood vessels of drilling through the piriformis' upper and lower hole.
采用解剖器械对臀区进行由浅入深的解剖，分离出梨状肌上下孔的神经、血管。
The buttock of corpses were dissected from the superficial to the deep by the anatomic instrument, separating the nerves, blood vessels of drilling through the piriformis' upper and lower hole.
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