Erector spinae versus quadro-iliac nerve blocks for pain after lumbar instrumentation

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults undergoing elective lumbar instrumentation under general anesthesia will receive one of two ultrasound-guided regional blocks—erector spinae plane block (ESPB) or quadro-iliac plane block (QIPB)—as part of a standardized multimodal analgesia protocol. Postoperative pain scores, opioid consumption, and recovery measures will be recorded to compare analgesic effectiveness between groups. Both blocks are performed under ultrasound guidance with local anesthetic deposited in the relevant fascial plane; ESPB is an established technique while QIPB is a newer approach targeting the plane near the iliac crest. The trial aims to clarify which block provides superior postoperative analgesia and inform perioperative pain management for lumbar spine surgery.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Age between 18 and 65 years
* Classified as American Society of Anesthesiologists physical status I-III
* Scheduled for elective lumbar instrumentation surgery under general anesthesia
* Provision of written informed consent

Exclusion Criteria:

* Use of anticoagulant medications or presence of bleeding diathesis
* Known allergy or hypersensitivity to local anesthetics or opioid drugs
* Infection at the planned block site
* Alcohol or drug dependence
* Cognitive impairment preventing reliable pain assessment
* Pregnancy or lactation
* History of previous lumbar spine surgery
* Diabetes mellitus
* Renal or hepatic insufficiency

Where it's running

• Bursa City Hospital
  Bursa, Turkey (Türkiye) Recruiting

Study contacts

• Study coordinator: Merih Yildiz Eglen, MD
• Email: meriheg@yahoo.com
• Phone: +905059340629

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.