Comparing the Postoperative Analgesic Efficacy of Anterior Iliac Block and Ilioinguinal-iliohypogastric Block in Inguinal Hernia Surgery

April 20, 2026 updated by: ABDULHAKİM ŞENGEL, Harran University

A Prospective Randomized Study Comparing the Postoperative Analgesic Efficacy of Anterior Iliac Block and Ilioinguinal-iliohypogastric Block in Inguinal Hernia Surgery

The primary aim of this study is to compare two postoperative analgesia techniques used in patients undergoing inguinal hernia surgery-(1) the anterior iliac block and (2) the ilioinguinal/iliohypogastric block-in terms of postoperative analgesia duration and patient satisfaction.

Effective postoperative analgesia in inguinal hernia surgery is crucial for improving patient comfort and reducing opioid consumption. Although ilioinguinal and iliohypogastric nerve blocks are commonly used for this purpose, their relatively limited dermatomal coverage may result in inadequate analgesia in some cases. The recently described Anterior Iliac Block has been proposed as an alternative to conventional techniques, offering potentially wider neural spread and more effective postoperative pain control. However, the efficacy and safety of this novel block have not yet been sufficiently evaluated in the literature.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

The primary aim of this study is to compare two postoperative analgesia techniques used in patients undergoing inguinal hernia surgery-(1) the anterior iliac block and (2) the ilioinguinal/iliohypogastric block-in terms of postoperative analgesia duration and patient satisfaction.

Effective postoperative analgesia in inguinal hernia surgery is crucial for improving patient comfort and reducing opioid consumption. Although ilioinguinal and iliohypogastric nerve blocks are commonly used for this purpose, their relatively limited dermatomal coverage may result in inadequate analgesia in some cases. The recently described anterior iliac block has been proposed as an alternative to conventional techniques, offering potentially wider neural spread and more effective postoperative pain control. However, the efficacy and safety of this novel block have not yet been sufficiently evaluated in the literature.

This study aims to compare the anterior iliac block with the ilioinguinal/iliohypogastric block in terms of postoperative pain control and patient satisfaction. The objective is to determine whether the anterior iliac block, through its broader dermatomal distribution, provides lower NRS pain scores, reduced analgesic requirements, and higher patient satisfaction compared with traditional nerve blocks.

Study Type

Interventional

Enrollment (Estimated)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey (Türkiye)
    • Hali̇li̇ye
      • Şanliurfa, Hali̇li̇ye, Turkey (Türkiye), 63040
        • Recruiting
        • Harran University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Study Population

18-65 years

Description

Inclusion Criteria:

  • It includes patients aged 18-65 years
  • Classified as ASA I-II
  • Who are undergoing elective inguinal hernia surgery

Exclusion Criteria:

  • Patients who did not wish to participate voluntarily
  • Those with contraindications to the anterior iliac block or the Ilioinguinal/Iliohypogastric block,
  • Pregnant or breastfeeding women
  • Patients classified as ASA III-IV-V

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Patient group who underwent anterior iliac block
In this patient group, an anterior iliac block will be administered in the postoperative period, and postoperative pain at the surgical site will be assessed.
Other: Patient group who underwent anterior iliac block
Patient group who underwent anterior iliac block
Active Comparator: Patient group who underwent ilioinguinal-iliohypogastric block
In this patient group, an ilioinguinal-iliohypogastric block will be administered in the postoperative period, and postoperative pain at the surgical site will be assessed.
Other: Patient group who underwent ilioinguinal/iliohypogastric block
Patient group who underwent ilioinguinal/iliohypogastric block

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Akut ağrı (Sayısal Derecelendirme Ölçeği-NRS)
Time Frame: 0-1-3-6-12-24 Hours
The score is rated on a scale from 0 to 10, where 0 indicates no pain and 10 indicates unbearable pain.
0-1-3-6-12-24 Hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Harran University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 20, 2026

Primary Completion (Estimated)

September 1, 2026

Study Completion (Estimated)

September 1, 2026

Study Registration Dates

First Submitted

November 21, 2025

First Submitted That Met QC Criteria

December 17, 2025

First Posted (Actual)

December 18, 2025

Study Record Updates

Last Update Posted (Actual)

April 21, 2026

Last Update Submitted That Met QC Criteria

April 20, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Anterior iliac block

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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