Inclusion Criteria:  Age 30 to 90 years At least one year post TKA Have no indications for revision TKA ≥4/10 knee pain for >6 months following TKA ≥80% relief with diagnostic genicular nerve blocks Willingness to undergo fluoroscopy-guided genicular nerve RFA treatment.  Exclusion Criteria:  Conditions that preclude RFA (e.g. pregnancy, pacemaker/ICD, severe cardiac/pulmonary compromise; acute illness/infection; coagulopathy or bleeding disorder; allergic reactions/contraindications to a local anesthetic. Inability to write, speak or read in English Patient refusal Significant psychiatric comorbidity