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This study aims to compare the efficacy of PENG and SIFI blocks for perioperative analgesia in hip fracture surgery.

June 13, 2026Medical Science MonitorOpen Access

Ultrasound-Guided Pericapsular Nerve Group Block vs Suprainguinal Fascia Iliaca Block for Analgesia in Hip Fracture Surgery: A Prospective Comparative Observational Study

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Prospective study compares PENG and SIFI blocks for pain relief in hip fracture surgery, indicating variable outcomes.

This study aims to compare the efficacy of PENG and SIFI blocks for perioperative analgesia in hip fracture surgery.
Prospective observational study involving 67 patients undergoing hip fracture surgery under spinal anesthesia.
Patients were assigned to receive either ultrasound-guided PENG block or SIFI block as part of routine care.
Pain intensity and secondary outcomes such as opioid consumption and range of motion were measured postoperatively.
The SIFI group reported lower pain scores during limb elevation (P < 0.001) and at 2 to 8 hours postoperatively (P < 0.001).
24-hour tramadol consumption was reduced in the SIFI group (P = 0.011).
Active hip flexion at 8 hours was greater in the SIFI group (P = 0.001).

Dedeoğlu et al. (2026) studied this question.

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