Aim: The aim of the present study was to assess the role of the electrophysiological studies in patients with lumbar disc disease.Methods: This study was conducted in the Department of Neurosurgery and study was conducted for the period of 2 years on 100 patients with lumbar disc prolapse, and all these patients were subjected to surgery.Results: Of the 100 patients, 70% were males and 30% were females. Low back pain was the most common symptoms seen in 95% of patients, followed by the leg pain seen in 75% in patients, numbness of lower limbs in 26% of patients, and loss bowel and bladder control was least and was present in 5% of patients. As per the EMG abnormalities, most common levels of intervertebral disc prolapse were L4-L5 and L5-S1 accounting for 32% and 31% of cases each followed by L5-S1 level which was seen in 27% of patients with L2-L3, L3-L4and L4-L5 prolapsed intervertebral disc (PIVD)and L3-L4 and L4-L5 PIVDs were seen in 5% of cases each. Of the 100 patients, EMG findings correlated with operative findings in 70 (70%) patients, however operative findings did not correlate with EMG findings in 30 (30%) patients. Significant improvement in NCV parameters after surgery can be observed.Conclusion: In compressive lesions of nerve roots (due to disc prolapsed), the EMG method has a high degree of accuracy in determining not only the presence of such lesions but also their exact location. EMG is accurate when correlated with the operative findings.