Arthroscopic Lysis and Lavage With and Without Intra-articular Injection of Hyaluronic Acid in Patients With DDwoR in TMJ

May 22, 2026 updated by: Eshraq Ahmed, Cairo University

Assessment of Arthroscopic Lysis and Lavage With And Without Intra-Articular Injection of Hyaluronic Acid in the Management of Patients With Disc Displacement Without Reduction: A Randomized Controlled Trial

The study aims to assess the outcomes of arthroscopic lysis and lavage procedure with and without single intra-articular injection of hyaluronic acid in managing patients with anterior disc displacement without reduction.

The research question that this study will answer is:

Does arthroscopic lysis and lavage combined with hyaluronic acid provide better outcomes in terms of pain intensity and maximum mouth opening compared to arthroscopic lysis and lavage alone?

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

52

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 Contact

Study Locations

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:

  1. Adults above 18 years old.
  2. Diagnosis of Disc Displacement Without Reduction (DDWOR) with limited mouth : eitherunilateral or bilateral based on the DC/TMD and confirmed with MRI
  3. History of unsuccessful conservative treatment such as physical therapy, occlusal splints,or medications (e.g., NSAIDs, muscle relaxants) for at least 3 months.
  4. Patients must sign the informed consent, understand the study procedures and potential risks, accept to volunteer in the study and be available to attend the follow-up visits.

Exclusion Criteria:

  1. Degenerative Temporomandibular Joint Disorders (e.g., osteoarthritis, rheumatoid arthritis).
  2. History of prior TMJ surgery (e.g., joint replacement, previous arthroscopy).
  3. Severe Systemic Conditions (e.g., cardiovascular disease, autoimmune disorders, uncontrolled diabetes).
  4. Active joint infection, acute inflammation, or presence of any condition that may increase the risk of complications from arthroscopic surgery or injections (e.g., local infection, uncontrolled bleeding disorders).
  5. Pregnancy or Breastfeeding.
  6. Patients with severe Psychological Conditions (e.g., severe depression, psychosis, myofascial pain disorder) or dental related pain will be identified at the initial assessment and referred for appropriate psychological, behavioural, or dental management prior to inclusion in the study.

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: Arthroscopic lysis and lavage
Procedure: Arthroscopic lysis and lavage
Arthroscopic lysis and lavage without intra-articular hyaluronic acid injection
Experimental: Arthroscopic lysis and lavage with single intra-articular hyaluronic acid injection
Procedure: arthroscopic lysis and lavage with intra-articular injection of hyaluronic acid
Arthroscopic lysis and lavage followed by intra-articular injection of hyaluronic acid

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pain intensity
Time Frame: baseline enrollment, preoperatively on day of surgery, Week 1, Month 1, Month 3, and Month 6 after intervention
Pain intensity will be assessed using the Visual Analog Scale (VAS) ranging from 0 to 10 , where 10 indicates no pain and 10 indicates worst pain
baseline enrollment, preoperatively on day of surgery, Week 1, Month 1, Month 3, and Month 6 after intervention

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Maximum mouth opening
Time Frame: baseline enrollment, preoperatively on day of the surgery, week 1, Month 1, Month 3, and Month 6 after intervention
Maximum mouth opening will be measured as the distance between the upper and lower incisors using a digital caliper and recorded in millimeters
baseline enrollment, preoperatively on day of the surgery, week 1, Month 1, Month 3, and Month 6 after intervention

Collaborators and Investigators

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

Sponsor

Cairo University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 (Estimated)

May 1, 2026

Primary Completion (Estimated)

January 1, 2027

Study Completion (Estimated)

January 1, 2027

Study Registration Dates

First Submitted

May 22, 2026

First Submitted That Met QC Criteria

May 22, 2026

First Posted (Actual)

May 29, 2026

Study Record Updates

Last Update Posted (Actual)

May 29, 2026

Last Update Submitted That Met QC Criteria

May 22, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Arthroscopic Lysis and Lavage

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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