Purpose: To investigate the effect of McKenzie method withInterferential therapy (IFT)when compare to IFTalone on acute low back pain (Sciatica) patients in terms of relieving pain, increasing lumbar extension range of motion and speed of walking.Methods: Randomised controlled clinical trial,fifty seven patients were screened; forty sciatica patients agedfrom 30 to 60 years with no recent injury were selected through the special tests, after randomisation, the experimental group (n-15) was treated with the McKenzie method andInterferential therapy whereas control group (n-15) was treated with the Interferential therapy alone. The primary outcome was the relief of low back pain and increasing the lumbar extension range of motion. The secondary outcome was the speed of walking by measuring the stride length and cadence for 10 meters.Result: The study aimed to compare the pain, lumbar extension range of motion (ROM), stride length, and cadence of two different teams before and after physiotherapy. The experimental team had an average pain score of 7.70 VAS, a lumbar extension range of motion of -3.70 degrees, a stride length of 56.70 cms, and a cadence of 115.35 steps. In post-physiotherapy, the team had an average pain score of 2.20 VAS, a lumbar extension range of motion of 24.85 degrees, a stride length of 58.65 cms, and a cadence of 113.15 steps. The mean difference in pain, ROM, stride length, and cadence was statistically significant. The results suggest that physiotherapy can be a valuable tool for improving pain management and reducing back pain.Conclusion: McKenzie method with Interferential therapy showed greater relief of low back pain, increased lumbar extension range of motion, increased speed of walking in terms of step length and cadence than IFT alone.