Background: Pain is an unpleasant sensory and emotional experience that typically involves actual or potential tissue damage. Hip fractures are fractures of the upper part of the femur, usually resulting in groin and thigh pain. Pain management is essential to reduce postoperative morbidity and mortality and accelerate recovery, so multimodal techniques including peripheral nerve blocks are highly favoured for postoperative analgesia. Aim to determine which is superior, supra-inguinal or infra-inguinal iliaca fascia nerve block. Methods: A total of 30 patient samples, with ASA physical status I-II, age group 20-85 years, who will undergo THA procedure with Spinal Anaesthesia and agree to participate in this study. The study design was a double-blind randomised trial assessing IL-6, NRS, Rescue Opioid, and Motor-Sparring. Results: Divided into two groups, S-FIB and I-FIB with 15 patients per group. In the calculation of IL-6 levels, S-FIB is far superior to I-FIB in the SP0 (preoperative), SP1 and SP2 (postoperative) tests (P < 0.05), meaning that S-FIB IL-6 levels are much lower. There is a significant difference in NRS values, in S-FIB compared to I-FIB at hours 6, 12, and 24 (P<0.05), it was found that S-FIB had no complaints of pain for 24 hours. In I-FIB there were 4 patients with NRS values of more than 4 so that rescue opioids were carried out. Whereas in the Motor-Sparring examination after the administration of peripheral nerve blocks, S-FIB had no muscle weakness compared to I-FIB there was muscle weakness at hours 6 and 12 (P<0.05). Thus, S-FIB is far superior in managing pain and minimal complications after THA surgery compared to I-FIB. Conclusion: S-FIB peripheral nerve block is far superior in postoperative pain management and no side effects of muscle weakness compared to I-FIB, post THA surgery