To compare the analgesic efficacy of local infiltration analgesia (LIA)and pericapsular nerve group to (PENG) block for hip hemiarthroplasty

This study aims to compare the analgesic efficacy of Local Infiltration Analgesia (LIA) and Pericapsular Nerve Group (PENG) block in patients undergoing hip hemiarthroplasty. Postoperative pain after hip surgery is significant, and while opioids are effective, they are associated with adverse effects. Therefore, motor-sparing regional techniques like PENG block and LIA are increasingly used to reduce opioid consumption and enhance recovery.

The study will be a randomized, blinded observational trial involving 80 ASA I–III patients aged 18–80 years undergoing hip hemiarthroplasty under spinal anesthesia. Patients will be randomly allocated into two groups:

Group P: Receiving ultrasound-guided PENG block

Group L: Receiving intraoperative local infiltration analgesia (LIA)

All patients will receive standardized spinal anesthesia and postoperative multimodal analgesia. Pain will be assessed using the Visual Analog Scale (VAS).

Primary Outcome:

Total rescue analgesic consumption within 24 hours postoperatively.

Secondary Outcomes:

Time to first rescue analgesic

VAS pain scores

Overall patient satisfaction (5-point Likert scale)

Statistical analysis will compare analgesic consumption and pain scores between groups, with significance set at p < 0.05. The sample size is 80 patients (40 per group), calculated to achieve 95% confidence level and 95% power.

Conclusion:

The study seeks to determine whether PENG block or LIA provides superior postoperative pain control and opioid-sparing effect in hip hemiarthroplasty patients, thereby contributing to improved recovery and patient satisfaction.