The purpose of this paper is to evaluate nd analize the radiological findings and operative results of 74cases of lumbar disc syndrom at Han-gang Sung-sim Hospital during the period from March 1973 to July 1976. Theresults are as follows; 1. The age distribution of the patients variued from 18 to 65 years old. The average ofthe age was 35 years old. Fourty six patients were male (62.2%) and twenty eight patients were female. 2. The sizeof the lower lumbar sinal canal was slightly decreased as compared with taht of the normal control group and theintervertebral disc space was also decreased. It is considered that the initial and fundamental cause of lumbardisc syndrome is degenerative change of intervertebral disc and also posterior articulation facet. 3. Decreasedlumbar lordosis in comparison with that on the normal contorl group is considered to be due to degenerative changeof vertebrae and increased lumbar muscular rigidity. 4. In this series of 74 patients considered to be have severelumbar disc syndrome, 43 had simple herniation of nucleus pulposus, 12 had lumbar spondylosis and 2 had spinalstenosis. the remainder had combination of two or more of these three conditions, as determined by pantopaquemyelography in all cases and substantiated by operative findings in the majority.