Pulsed Radiofrequency Therapy vs Canal Adductor Blockade in Knee Osteoarthritis

Inclusion Criteria: * Diagnose of the Knee osteoarthritis confirmed by orthopedic examination * K-L grades 3 and 4 * A sufficient level of education to understand study procedures * Be able to communicate with site personnel * Age \>45 years Exclusion Criteria : * Any cardiovascular, hepatic, or renal conditions that would compromise participation, in the opinion of the investigator * Severe neurologic conditions interfere with a knee condition * Narcotic dependent (opioid intake of more than 3 months and more than 30 mg of daily oral morphine equivalents) * Coexisting severe hematological disorder or deranged coagulation parameters * Psychiatric illnesses * Allergy to any of the drugs used in the study * Infection or malignancy at the site of the block * Any active systemic infection * Implanted electronic devices like spinal cord stimulators, cardiac pacemakers or similar