Comparison of the analgesic effect of ibuprofen with mesalamine after discectomy surgery in patients with lumbar disc herniation: A double-blind randomized controlled trial

Background: Pain management is an important component in the postoperative period following discectomy. Aims: We hypothesized that mesalamine considering its better safety profile, is likely to be a better choice, if it would be as effective as ibuprofen in controlling post-discectomy pain. Settings and Design: A double-blind randomized controlled trial was performed on patients who underwent lumbar discectomy surgery. Materials and Methods: Of the 58 patients who had lumbar discectomy, 27 patients were randomized to oral ibuprofen 500 mg and 31 patients to mesalamine 400 mg, three times a day for nine days following surgery. There was no placebo group. Severity of pain was assessed by using 10- cm visual analogue scale (VAS), once before operation and for nine days after. Statistical Analysis: Mean ± SD pain scores were compared between groups and the statistical difference was estimated by Student′s test using SPSS (Version 13). We also calculated the power of each t-test. Repeated measure ANOVA was performed for measuring the effect of time. Results: The age range of the patients was 35 to 60 years (mean: 42.2 years). Mean ± SD preoperative pain scores for ibuprofen or mesalamine-treated groups were 7.852 ± 2.441 and 7.806 ± 2.892, respectively. At the end of day 9, mean ± SD of pain score was 2.704 ± 2.284 and 2.717 ± 2.273 for ibuprofen and mesalamine-treated groups respectively. Both drugs significantly reduced postoperative pain and there was no statistically significant difference between the two groups.Conclusions: Since both drugs showed almost equal analgesic effect, considering its safety profile mesalamine, seems to be the preferred choice to alleviate post-discectomy surgery pain