Cryoneurolysis vs bipolar radiofrequency ablation for knee osteoarthritis pain
Official title: Ultrasound-Guided Cryoneurolysis Versus Bipolar Radiofrequency Ablation of Genicular Nerves for Pain Relief in Symptomatic Knee Osteoarthritis: A Randomized Controlled Trial
Run by National Cancer Institute, Egypt · NCT07855367 · Data updated 2026-11-12
This study tests whether ultrasound-guided cryoneurolysis or bipolar radiofrequency ablation provides greater pain relief for adults with symptomatic knee osteoarthritis.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 40 Years and up |
| Sex | All |
| Enrollment | 30 (estimated) |
| Sponsor | National Cancer Institute, Egypt Academic / other |
| Locations | 1 site (Cairo) |
| Status | Recruiting |
| Started | September 15, 2026 |
| Main results expected | March 15, 2027 |
| Study ends | March 15, 2027 |
| Registry record updated | October 2, 2026 |
| Trial ID | NCT07855367 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 40 or older with symptomatic knee osteoarthritis (Kellgren-Lawrence grade III-IV) and pain ≥5 on NRS who have a positive genicular nerve block.
✕Probably not a fit
Individuals without a meaningful response to the nerve block or with exclusionary conditions may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This interventional study compares two nerve-targeted treatments to relieve knee pain in adults with radiographically confirmed osteoarthritis. Participants receive either ultrasound-guided cryoneurolysis or bipolar radiofrequency ablation of the genicular nerves. Pain outcomes are measured with the Numerical Rating Scale at predefined follow-up times. The trial aims to determine which method more effectively reduces knee pain while maintaining joint stability. Eligibility requires age 40 or older, radiologic OA Kellgren-Lawrence grade III-IV, chronic pain, and a positive genicular nerve block response.
Why it matters
Potential benefit: If successful, the preferred procedure could offer longer-lasting knee pain relief for people with knee OA.
How similar studies have gone: Prior interventional nerve-targeting approaches have shown pain relief in knee OA, but direct head-to-head comparisons between cryoneurolysis and bipolar RFA are limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age ≥ 40 years * Symptomatic knee osteoarthritis (OA) in bladder cancer patient \[based on American College of Radiology (ACR) criteria\] * Radiological OA (Kellgren-Lawrence grade III-IV) * Chronic knee pain ≥ 3-6 months * Numerical Rating Scale (NRS) ≥ 5 despite conservative treatment * Positive diagnostic genicular nerve block (\>50% pain relief). Exclusion Criteria: * Prior genicular nerve ablation * Coagulopathy * Local infection * Severe deformity * Neuropathic pain syndromes * Uncontrolled comorbidities
Where it's running
-
Cairo University
Cairo, Egypt Recruiting
Study contacts
- Study coordinator: Ahmed S Abdelgalil, MD
- Email: ahmed.salah@nci.cu.edu.eg
- Phone: 00201098426689
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.