Table.

Patient Characteristics and Outcomes

Pre-CRFAPost-CRFA, 3 monthsPost-CRFA, 6 months
CaseAge, years/SexOA Gradea/LocationVASWOMACDiagnostic Block ReliefbVASWOMACVASWOMAC
178/M4/Right knee8/1064/96>70%1/1033/962/1039/96
260/F4/Left knee7/1062/96>70%2/1032/963/1039/96
  • aAssessed with the Kellgren and Lawrence scale, in which grade 0 signifies no osteoarthritis and grade 4 signifies severe osteoarthritis.

  • b≥2 hours.

  • Notes: The visual analog scale (VAS) ranges from 0 to 10, with 0 corresponding to no pain and 10 corresponding to worst pain. Scores for the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) range from 0 to 96, with higher scores denoting higher levels of functional difficulty.

  • CRFA, cooled radiofrequency ablation; F, female; M, male; OA, osteoarthritis; VAS, visual analog scale; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.