Comparing two methods for knee pain relief in osteoarthritis

Comparison of the Efficacy of Ultrasound-Guided Phenol Block and Corticosteroid-Local Anesthetic Block Applied to the Genicular Nerve in Patients With Knee Osteoarthritis

NA · Gaziler Physical Medicine and Rehabilitation Education and Research Hospital · NCT06265675

This study is testing which of two pain relief methods works better for people with knee pain from osteoarthritis who haven't found relief from other treatments.

Quick facts

PhaseNA
Study typeInterventional
Enrollment88 (estimated)
Ages50 Years to 80 Years
SexAll
SponsorGaziler Physical Medicine and Rehabilitation Education and Research Hospital (other)
Locations1 site (Ankara, Çankaya)
Trial IDNCT06265675 on ClinicalTrials.gov

What this trial studies

This study aims to compare the efficacy of two neurolysis techniques, phenol block and corticosteroid-local anesthetic block, for treating knee pain in patients with osteoarthritis. Participants must have experienced knee pain for at least six months and have not responded to conservative treatments. The study will evaluate the effectiveness of these interventions in reducing pain levels, as measured by the Numeric Rating Scale (NRS). By assessing the outcomes of these two methods, the research seeks to identify the more effective approach for managing knee osteoarthritis pain.

Who should consider this trial

Good fit: Ideal candidates are patients with knee osteoarthritis experiencing significant pain who have not found relief from other treatments.

Not a fit: Patients with acute knee injuries, recent surgeries, or certain medical conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective pain management option for patients suffering from knee osteoarthritis.

How similar studies have performed: While there have been studies on neurolysis techniques, the specific comparison of phenol block versus corticosteroid-local anesthetic block in this context is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with knee osteoarthritis must have pain at least 6 months
* NRS score of knee pain equal or more than 5
* At least grade 3 in Kellgren-Lawrence grading scale
* Non responsive to life style change, weight control, exercises program, medical treatment and the other conservative treatments (physical therapy, intraarticular injections)
* Decreasing at NRS score more than %50 after diagnostic block
* Those who accept the consent form

Exclusion Criteria:

* Patients who have acute knee injury
* Surgery history in knee
* Connective tissue disease that affect knee
* Sciatica
* Injection story in last 3 months
* Psychiatric or neurologic diseases that affect study
* Septic arthritis, active local or systemic infection
* Coagulopathy
* Pregnancy
* Allergic reaction

Where this trial is running

Ankara, Çankaya

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.

View on ClinicalTrials.gov →

Conditions: Knee Osteoarthritis, Genicular nerve, Phenol, Neurolysis, Nerve Blockage

Last reviewed 2026-05-15 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.