Introduction: Lumbar disc herniation is one of the most common diagnoses encountered in clinical spine practice. It is among the leading causes of chronic disability and functional incapacity in the working years. Aim of the study: To assess the patterns and outcomes of surgically treated lumber disc herniation among patients at Calcutta National Medical College & Hospital (CNMC&H) Kolkata. Material and Methods: The present study was conducted in Department of neurosurgery and neurology, Calcutta National Medical College and Hospital (CNMC &H). Total 48 patients admitted with low back pain and sciatica in department of neurosurgery and neurology during the study period December 2015- December 2017 were included in present study. A complete clinical and detailed radiological and in few cases electrophysiological investigations will be done followed by operative management. The test for differences in the visual analogue (VAS) scale scores was also conducted using the sign rank test. Results: The mean age was 47(SD: 9) years. Male and female participants in the age group of 40-50 years were highly represented (44%). The main presenting symptom was LBP and leg pain, present in 45 (94%) participants. 33(94.29%) patients with history of predominantly leg pain reported a favorable outcome to surgery. 28(96.55%) patients with L4 L5 PIVD pre operatively reported a favorable outcome to surgery. Out of 10 patients with complaints of low back pain, 6 were satisfied with the outcome of the operation (60%) (p value-0.0128 statistically significant). Conclusion: It is found that most of the patients benefitted from lumbar discectomy surgery in terms of rapid reduction of pain. Discectomy has a high success rate for patients with HLDs who have failed a period of conservative management.

Low back pain (LBP), Lumbar Disc Herniation (LDH), visual analogue scale (VAS)