摘要
Abstract
Objective To investigate the value of preoperative neuromyography in evaluating pain degree and progno-sis of patients with lumbar spinal stenosis.Methods The 85 patients with lumbar spinal stenosis treated by posterior lumbar interbody fusion were selected as the observation group,and 80 healthy volunteers were selected as the control group.EMG was used to detect the action potential amplitude,latency and conduction velocity of motor and sensory nerves in twog groups.In the observation group,the relationship between EMG parameters and pain VAS,prognosis was analyzed.Results Compared with the control group,the motor latency of EMG in observation group were in-creased,the amplitude was decreased,and the motor conduction velocity slowed down,the amplitude of sensory nerve was decreased and the sensory conduction speed slowed down(P＜0.05).In the observation group,the preoperative pain VAS was negatively correlated with motor nerve conduction velocity,sensory nerve conduction velocity,amplitude and F-wave occurrence rate of posterior tibial nerve(P＜0.05),and positively correlated with latency,tibial nerve H reflexion indexes(H latency,H-M latency,H/M amplitude ratio),F-wave latency and F-wave dispersion(P＜0.05).In the observation group,compared with the patients with good prognosis,the latency of tibial nerve,common peroneal nerve and femoral nerve were increased,the amplitude decreased,and the motor conduction speed slowed down in the patients with poor prognosis.The amplitude of superficial peroneal nerve and sural nerve were decreased,and the speed of sensory conduction slowed down.F-wave occurrence rate of posterior tibial nerve was decreased,F-wave latency prolonged,dispersion increased,tibial nerve H latency prolonged,H-M latency prolonged,H/M ampli-tude ratio was increased.Conclusions Preoperative EMG can be used as a potential indicator to evaluate the pain degree of patients with lumbar spinal stenosis,and can be used as an indicator to predict the occurrence of postopera-tive poor prognosis.关键词
腰椎椎管狭窄症/神经肌电图/疼痛程度/预后Key words
lumbar spinal stenosis/electroneuromyography/pain level/prognosis分类
临床医学
