A.90% B.80% C.70% D.60% E.50%
A.50%~55% B.60%~65% C.70%~75% D.80%~85% E.90%~95%
A.腰痛 B.坐骨神经痛 C.股神经痛 D.下肢无力 E.大、小便障碍