Pain Relief Effect of Low-intensity Continuous Ultrasound Stimulator for Knee Arthritis

Inclusion Criteria: * Patients aged 40 to 60 years with pain due to OA of the knee and able to walk voluntarily * Those who have more than one osteophyte in the tibiofemoral joint on radiographic findings (Kellgren-Lawrence gradesⅡ,Ⅲ) * At visit 1 (screening) and visit 2, the pain status during knee OA activity was 100 mm pain VAS, as a result, those who are over 40mm * If the Kellgren \& Lawrence Grades are the same, target the one with the higher 100mm pain VAS * Patients who are willing or able to follow the doctor's instructions, including joint movements * Persons who can comply with concomitantly permitted drugs, prohibited drugs, and relief drugs * Persons who can maintain the same exercise and activity during the clinical trial period * Fully understand the purpose and procedure of this clinical trial Exclusion Criteria: * Those who have a history of rheumatoid arthritis or gouty arthritis or who have peripheral pain other than the knee joint patient. * Those with fractures or dislocations on simple radiological examination. * Those who are identified, or those with a similar risk of neuromuscular disease * Those who have participated in other clinical trials within 6 months of participating in clinical trials. * Patients with severe pain in the knee joint other than angular deformity, instability, and index knee in the knee joint * Patients with other tumors other than degenerative knee arthrosis * Persons with systemic symptoms that may affect knee pain * Pregnant and lactating women