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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Age \> 18 years old.
* Both sexes.
* Patients with knee osteoarthritis.
* Previous conservative treatments longer than 3 months.
* Visual analog scale (VAS)≥ 4.
* Radiological osteoarthritis grades 3 and 4 according to the Kellgren-Lawrence grading system (0 = none, 1 = doubtful, 2 = minimal, 3 = moderate, and 4 = severe).
Exclusion Criteria:
* Prior knee surgery.
* Allergies to local anesthetics.
* Connective tissue diseases affect the knee.
* Serious neurologic or psychiatric disorders.
* Injection with steroids or hyaluronic acids during the previous 3 months.
* History of septic arthritis.
* Sciatic pain.
* Cardiac pacemaker users.
* Anticoagulant medications.
* Prior electroacupuncture treatment.