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Pericapsular Nerve Group Block Versus Intrathecal Morphine for Pain After Hip Surgery

NCT07784192 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 64

Last updated 2026-08-26

No results posted yet for this study

Summary

Pain after hip replacement surgery is often severe and is commonly treated with opioids, which may cause nausea, vomiting, sedation, difficulty passing urine and slow breathing. This study will compare two ways of controlling pain in adults having hip surgery under spinal anesthesia. One group will receive morphine added to the spinal injection. The other group will receive an ultrasound-guided pericapsular nerve group (PENG) block, in which local anesthetic is injected near the nerves that carry pain signals from the hip joint. Participants will be assigned to one of the two groups by chance. Sixty-four adults aged 18 to 65 years will take part, with 32 in each group. Pain scores at rest and during movement, the total amount of morphine used through a patient-controlled pump, the time until the first request for extra pain medicine, the amount of additional paracetamol used, side effects such as nausea and vomiting, and complications related to the block will be compared between the groups during the first 48 hours after surgery.

Conditions

  • Hip Arthroplasty, Total
  • Postoperative Pain
  • Hip Arthroplasty
  • Analgesia
  • Hip Fractures (ICD-10 72.01-72.2)

Interventions

DRUG

Morpine

Preservative-free morphine hydrochloride 100 micrograms will be added to 10 mg of hyperbaric bupivacaine 0.5% and administered into the intrathecal space at the L3-L4 or L4-L5 interspace as part of spinal anesthesia.

PROCEDURE

Ultrasound-guided pericapsular nerve group block

After spinal anesthesia, an ultrasound-guided pericapsular nerve group block will be performed on the operative side. A 21 gauge, 80 to 100 mm echogenic needle will be advanced in-plane from lateral to medial into the fascial plane between the iliopubic eminence and the iliopsoas tendon, and 20 mL of bupivacaine 0.5% will be injected after negative aspiration.

DRUG

Bupivacaine

Hyperbaric bupivacaine 0.5%, 10 mg, will be administered intrathecally in both groups as the spinal anesthetic. In the PENG block group, an additional 20 mL of bupivacaine 0.5% will be used for the block.

Sponsors & Collaborators

  • Selcuk University

    lead OTHER

Principal Investigators

  • Inci KARA · Selcuk University Hospital

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-08-24
Primary Completion
2026-09-18
Completion
2026-09-25

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07784192 on ClinicalTrials.gov