Introduction: Spinal anesthesia is performed for orthopedic lowerlimb surgeries for its dense blockade, rapid onset and pain relief in the postoperative period. femoral nerve block is performed prior to subarachnoid block helps in better positioning of the patient. Our study we had compared the effects of Ropivacaine alone and Ropivacaine with Fentanyl in blocking the femoral nerve prior to subarachnoid block. Aims & Objectives: To study the effect of fentanyl added to ropivacaine and ropivacaine alone in pain relief by blocking the femoral nerve prior to positioning the patients for sub arachnoid block. in orthopaedic above knee surgeries. Materials and Methods: Sixty ASA-PS I and II patients were posted for orthopedic above knee surgeries. Patients were distributed equally between the groups. One received 20 ml of 0.2% ropivacaine and another group received 20 ml of 0.2% ropivacaine with 50 mcg fentanyl. Results: Performing femoral nerve block provides significant improvement in pain scores, patient positioning, number of attempts in performing spinal anesthesia and hence the time taken for spinal anesthesia. Addition of 50 mcg fentanyl to ropivacaine resulted in a statistically same decrease in VAS scores, quality of patient positioning and decreased the number of attempts in performing spinal anesthesia. Patients were hemodynamically stable. Conclusion: Fentanyl added to the ropivacaine and ropivacaine alone in femoral nerve block had similar analgesic effect on positioning the patients prior to sub arachnoid.