Effect of Transfer of Energy Capacitive and Resistive on Chronic Discogenic Sciatica

The goal of this clinical trial is to evaluate the effect of Transfer of Energy Capacitive and Resistive (TECAR) on pain, functional disability and electrophysiological parameters in adults with chronic discogenic sciatica . The main questions it aims to answer are: • Is there significant effect of TECAR therapy on pain, functional disability and Electrophysiological parameters (H-reflex latency and amplitude) ? Researchers will compare effect of adding TECAR therapy to conventional physical therapy program (TENS, hot pack, stretching exercises and core stability exercises) Vs conventional physical therapy program alone to see if there is a beneficial effect of adding TECAR therapy to physical therapy program Participants in study group will receive TECAR therapy in addition to conventional PT program while participants in control group will receive conventional PT program