Clinical trial Recruiting at 1 site Interventional Ages 40 and up

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.

More Knee Osteoarthritis trials

Quick facts

Study typeInterventional
Ages40 Years and up
SexAll
Enrollment30 (estimated)
SponsorNational Cancer Institute, Egypt
Academic / other
Locations1 site (Cairo)
StatusRecruiting
StartedSeptember 15, 2026
Main results expectedMarch 15, 2027
Study endsMarch 15, 2027
Registry record updatedOctober 2, 2026
Trial IDNCT07855367 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.