This study aims to compare the reduction in knee pain between ultrasound-guided cryoneurolysis and bipolar radiofrequency ablation (RFA), as measured by the Numerical Rating Scale (NRS) at predefined follow-up intervals.
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
Prior genicular nerve ablation
Coagulopathy
Local infection
Severe deformity
Parallel
Ultrasound-guided cryoneurolysis
Procedure/SurgeryPatients will undergo ultrasound-guided cryoneurolysis
Bipolar radiofrequency ablation
Procedure/SurgeryPatients will undergo bipolar radiofrequency ablation
Degree of pain
Each patient will be instructed about postoperative pain assessment with the numeric rating scale (NRS) score. NRS (0 represents "no pain" while 10 represents "the worst pain imaginable").
Knee Injury and Osteoarthritis Outcome Score
Knee Injury and Osteoarthritis Outcome Score (KOOS) will measure * Pain * Symptoms * Activities of daily living * Sports/recreation * Quality of life
Western Ontario and McMaster Universities Osteoarthritis Index
Western Ontario and McMaster Universities Osteoarthritis (WOMAC) Index is a widely used, self-administered questionnaire that evaluates pain, stiffness, and physical function in patients with knee and hip osteoarthritis.
Oxford Knee Score
The Oxford Knee Score is a 12-item patient-reported questionnaire used to assess pain and physical function in the knee. Score Interpretation 0 to 19 (Severe): May indicate severe knee problems or advanced arthritis; surgical intervention like a knee replacement may be considered. 20 to 29 (Moderate to Severe): Reflects considerable pain and functional limitations. 30 to 39 (Mild to Moderate): Suggests mild-to-moderate joint issues with some activity limitations. 40 to 48 (Satisfactory): Indicates normal or satisfactory joint function with minimal knee problems.
Patient Global Impression of Change (PGIC)
The traditional Patient Global Impression of Change (PGIC) uses a 7-point scale where patients select the statement that best describes their current state compared to how they felt before treatment: 1. Very much improved (or Much better) 2. Much improved 3. Minimally improved 4. No change (or The same) 5. Minimally worse 6. Much worse 7. Very much worse (or Very much worse)
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