Clinical research on magnetic resonance myelography of prola spe of lumbar intervertebral disc

FENGYu; YANGWen-dong; BIYong-min; WANGFei; FANYu

Abstract：Objective Observe the MRM changes in patients with huge lumbar intervertebral disc protrusion, and make it as a preliminarily determination whether patients with huge lumbar intervertebral disc protrusion are in line with the indications of manual therapy, and imaging examination method with harm possibility of huge protrusion on the horsetail nerve. Methods Select 39 cases of patients with huge lumbar intervertebral disc. Observe the data of MRI and the MRM data then analyze it. Results The performance of MRM in 39 patients who has been confirmed with huge lumbar intervertebral disc protrusion can be divided into three types:①A total of 5 cases showed that dural sac and nerve root sleeve displayed as roughly normal, no obvious pressure trace of nucleus pulposus. ②A total of 24 cases showed that patients with lumbar disc prolapse MRM appeared pressure mark, even interruption of nerve root sleeve, due to the decrease of cerebrospinal fluid filling in the nerve root sleeve. ③A total of 10 cases showed that the dural sac has been broken or obvious defect and the terminal of dural sac disappeared, because the cerebrospinal fluid in dural sac has been pressed by the herniation of the nucleus pulposus. Conclusions ①The MRM display that dural sac and nerve root sleeve was changed to be turgor after oppressed by herniation of the nucleus pulposus, which reflect the mechanical relationship between the two parts. ②The MRM display that the dural sac and nerve root sleeve of most patients who suffered herniated lumbar intervertebral disc protrusion has not been oppressed obviously by the herniation of the nucleus pulposus, indicating that even huge herniated vertebral canal can accommodate it. ③According to the imaging finding of MRM which displayed that the dural sac and nerve root sleeve was oppressed by herniation of the nucleus pulposus, it can preliminarily determine whether patients with huge lumbar intervertebral disc protrusion are in line with the indications of manual therapy, and the possibility of the horsetail nerve damage caused by huge protrusion.