Clinical significance of segmental somatosensory evoked potential in diagnosing the lumbar spinal stenosis / 中国矫形外科杂志

ABSTRACT

[Objective]To investigate the effect of dermatomal somatosensory evoked potential(DSEP) in diagnosing the damage of nerve root in lumbar spinal stenosis. [Method]Diagnostic test was deployed in this reseach.All experiment objects were divided into the case group and the control group.There were 47 cases in the case group.There were 14 males and 33 females with the mean age of 52.6 and the mean stature was 1.64 m.In the control group,there were 50 cases which include 26 males and 24 females with the mean age of 50.4 and the mean stature of 1.65 m.The DSEP P40 latency and P1-N1 amplitude of cutis plate in L4、5 and S1 segment were determined.The data of the case group were compared with those of control group and analyzed statistically.[Result]In the case group,the P40 latency of 91 segments prolonged obviously and P40 wave of 103 segments disappeared.Comparing the P40 latency and P1-N1 amplitude of 3 segments(L3、4、L4、5and L5S1) in two groups,the change was remarkable(P