Quadro‑Iliac Plane Block versus Erector Spinae Plane for pain after total hip replacement

Analgesic Efficacy of Quadro-Iliac Plane Block Versus Erector Spinae Plane in Total Hip Arthroplasty: A Randomized Non-Inferiority Trial

Not applicable Interventional Tanta University · NCT07537036

This will test whether the quadro‑iliac plane block or the erector spinae plane block controls pain better after total hip replacement in adults having spinal anesthesia.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment76 (estimated)
Ages18 Years and up
SexAll
SponsorTanta University Academic / other
Locations1 site (Tanta, El-Gharbia)
Trial IDNCT07537036 on ClinicalTrials.gov

What this trial studies

Total hip arthroplasty is commonly performed and effective postoperative pain control is important to minimize opioid use and its side effects. This interventional comparison applies either a quadro‑iliac plane block (QIPB) or an erector spinae plane block (ESPB) after THA performed under spinal anesthesia. Participants will receive one of the two regional blocks and postoperative pain, opioid consumption, and related side effects will be monitored. The aim is to determine which block provides superior analgesia and fewer opioid-related complications for adult patients.

Who should consider this trial

Good fit: Adults aged 18 or older scheduled for elective total hip arthroplasty under spinal anesthesia with ASA physical status I–III, BMI ≤ 35 kg/m2, no opioid dependency, and no contraindications to local anesthetics.

Not a fit: Patients with allergies to local anesthetics, opioid dependency, BMI > 35, cognitive impairment, bleeding/coagulation disorders, local infection at the injection site, severe organ dysfunction, psychiatric or neurological disorders, or those undergoing emergency surgery may not benefit or be eligible.

Why it matters

Potential benefit: If successful, one block could provide better pain relief with lower opioid use and fewer opioid-related side effects after hip replacement.

How similar studies have performed: Fascial plane blocks such as ESPB and various quadratus/iliac approaches have shown opioid-sparing and pain-reducing effects in some studies, but the quadro‑iliac plane block is relatively new and direct head-to-head evidence is limited.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years.
* Both sexes.
* American Society of Anesthesiology (ASA) physical status I-III.
* Undergoing total hip arthroplasty (THA) under spinal anesthesia.

Exclusion Criteria:

* History of allergies to local anesthetics.
* Opioid dependency.
* Body mass index (BMI) \> 35 kg/m2.
* Cognitive impairment.
* Bleeding or coagulation disorders.
* Psychiatric and neurological disorder.
* Local infection at the site of injection.
* Severe heart, lung, liver, and renal dysfunction.
* Emergency surgery.

Where this trial is running

Tanta, El-Gharbia

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Analgesic EfficacyQuadro-Iliac Plane BlockErector Spinae Plane BlockTotal Hip Arthroplasty
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.