Inclusion Criteria:  History of sciatica for more than 12 weeks or has at least 3 episodes of intermittent sciatica, each last for morethan 1 week eitheraccompanied with low back pain during the 3 months before thestudy. Medically and radiologically diagnosed as discogenic chronic sciatica with mild to moderate disability according to modified Rolland and Morris scale.  Both males and females, aged from 25 to 40 years old. Be able to understand and follow the instructions during testing and treatment procedures  Exclusion Criteria:  Fracture of pelvis, spine or lower extremities.  Hospitalization for severe trauma. Peripheral neuropathy of diabetes or any other autoimmune disease. Systematic autoimmune disease such as rheumatoid arthritis, systematic lupus People with red flags such as cancer or severe osteoporosis. Symptoms provoked while doing active hip joint extension and abduction. Previous surgery to the lumbar spine, abdomen, pelvis, or hip. Any contraindication for exercise therapy (e.g. uncontrolled hypertension, previous myocardial infarction, cardiovascular disease, peripheral vascular disease, respiratory disorders). Any pain originated because of SI pathology. Menstruation during testing days. Individuals incapable of understanding and answering the Questionnaire.