요천추 추간판 탈출환자에서 하지직거상 검사의 임상적 가

Abstract

Straight leg raising test is widely used for diagnosis of intervertebral disc herniation. And I tried to get to know what clinical and electrophysiological information about the degree of which the degree of positive reaction in this test.

Among the patients who came to hospital with low back pain, those who complained about radiating pain in the lower extremity on one side with abnormal image finding such as MRI were selected as the object of study. According to the extent of the lesion on MRI finding, 4 groups were sorted as bulging, protrusion, extrusion and sequestration. By the direction of herniation, it was classified as posterior, lateral, lateroposterior and posterolateral. I divided spinal canal into 2 parts by the location of herniation, and with 3 anteroposterior lines, parted it in 3 compartments. We compared nerve conduction test, Needle electromyography, H-reflex of soleus muscle and anterior tibialis muscle, the degree of manifestation of abnormal spontaneous electric potential in 4 levels, and checked the correlation with straight leg raising test.

Significant association with straight leg raising test was present in herniation site(P<0.05) and significant negative correlation was shown in abnormal spontaneous electric potential and H-reflex of soleus muscle.

These results suggest that straight leg raising test is associated with degree of nerve root lesion and direction and location of herniation which is determined by the extent of thecal or nerve root compression.