Effect of Omentopexy on Incisura Angularis Morphology and Gastric Emptying After Laparoscopic Sleeve Gastrectomy

May 14, 2026 updated by: Volkan Genc, Ankara University
This prospective randomized study aimed to evaluate the effect of omentopexy performed during laparoscopic sleeve gastrectomy (LSG) on incisura angularis morphology, gastric emptying time, postoperative dyspeptic symptoms, and early weight loss outcomes. Patients undergoing primary LSG were randomized to either LSG with omentopexy or LSG without omentopexy. Gastric emptying was assessed using scintigraphic gastric emptying studies, and changes in incisura angularis angle were evaluated using intraoperative image analysis. Postoperative symptoms were assessed using the Short Form Leeds Dyspepsia Questionnaire.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Laparoscopic sleeve gastrectomy (LSG) is one of the most commonly performed bariatric surgical procedures worldwide. However, postoperative gastrointestinal symptoms, gastric torsion, and functional stenosis remain important concerns after surgery. Omentopexy has been proposed as a technical modification to stabilize the gastric tube and preserve anatomical alignment, but its clinical and functional effects remain controversial.

This prospective randomized controlled study was conducted to evaluate the effect of omentopexy performed during LSG on incisura angularis morphology, gastric emptying time, postoperative dyspeptic symptoms, and early weight loss outcomes. Eligible patients undergoing primary LSG were randomized into two groups: LSG with omentopexy and LSG without omentopexy.

The incisura angularis angle was evaluated using intraoperative image analysis. Gastric emptying time was assessed preoperatively and at the postoperative third month using scintigraphic gastric emptying studies (T½). Postoperative dyspeptic symptoms were evaluated using the Short Form Leeds Dyspepsia Questionnaire. Demographic, clinical, laboratory, and postoperative outcome data were prospectively recorded and compared between groups.

Study Type

Interventional

Enrollment (Actual)

36

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)
    • Ankara
      • Ankara, Ankara, Turkey (Türkiye), 06100
        • Ankara University Faculty of Medicine

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

Description

Inclusion Criteria:

  • Patients aged between 18 and 65 years Patients scheduled for primary laparoscopic sleeve gastrectomy for obesity treatment Patients who provided written informed consent

Exclusion Criteria:

  • Previous gastrointestinal surgery Hiatal hernia Peptic ulcer disease Esophagitis Pangastritis detected on preoperative endoscopy Inability to tolerate postoperative scintigraphic evaluation

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: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: LSG With Omentopexy
Participants underwent laparoscopic sleeve gastrectomy with omentopexy. Omentopexy was performed by fixation of the greater omentum to the gastric staple line following sleeve gastrectomy.
Procedure: Laparoscopic Sleeve Gastrectomy With Omentopexy
Laparoscopic sleeve gastrectomy was performed using a standard surgical technique. In addition, omentopexy was performed by fixation of the greater omentum to the gastric staple line in order to stabilize the gastric tube anatomy.
Active Comparator: LSG Without Omentopexy
Participants underwent standard laparoscopic sleeve gastrectomy without omentopexy.
Procedure: Laparoscopic Sleeve Gastrectomy Without Omentopexy
Standard laparoscopic sleeve gastrectomy was performed without omentopexy.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Incisura Angularis Angle
Time Frame: Preoperative and postoperative 3 months
Changes in the incisura angularis angle were evaluated using vector-based measurements obtained from intraoperative images before and after laparoscopic sleeve gastrectomy.
Preoperative and postoperative 3 months

Collaborators and Investigators

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

Sponsor

Ankara University

Investigators

  • Principal Investigator: Volkan Genç, MD, Ankara University Faculty of Medicine

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)

June 26, 2023

Primary Completion (Actual)

December 27, 2024

Study Completion (Actual)

December 27, 2024

Study Registration Dates

First Submitted

May 11, 2026

First Submitted That Met QC Criteria

May 11, 2026

First Posted (Actual)

May 15, 2026

Study Record Updates

Last Update Posted (Actual)

May 18, 2026

Last Update Submitted That Met QC Criteria

May 14, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2023000352-2

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

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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