Can a special needle treatment ease chronic knee pain?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients whose NRS (Numeric Rating Scale) of knee pain is 5 or higher * Patients whose symptoms persist for more than 3 months * Patients who are between 19 and 70 years of age * Patients who, after receiving a detailed explanation of the clinical study and fully understanding it, voluntarily decide to participate and agree in writing to comply with the precautions. Exclusion Criteria: * Patients who have been diagnosed with a specific serious disease that may cause knee pain (acute fracture, dislocation, traumatic damage to ligaments and cartilage, etc.) * If the cause of the pain is caused by a disease other than the knee (tumor, fibromyalgia, rheumatoid arthritis, gout, lumbar disc herniation, etc.) * Cases that occur due to a traumatic event and require surgical intervention due to suspected acute fracture, dislocation, ligament and cartilage damage * Patients who diagnosed other chronic diseases (stroke, myocardial infarction, kidney disease, diabetic neuropathy, dementia, epilepsy, etc.) that may interfere with the treatment effect or interpretation of results. * Patients who are currently taking steroids, immunosuppressants, drugs for mental illness, or other drugs that may affect the results of the study * Patients who acupuncture treatment is inappropriate or unsafe: Patients with bleeding disorders, those receiving anticoagulant treatment, and patients with severe diabetes at risk of infection. * Patients who have taken drugs that may affect pain, such as Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), or have received herbal acupuncture or physical therapy within the past week * Patients who are pregnant, planning to become pregnant, or are breastfeeding * Patients within 3 months after knee surgery or if knee replacement surgery was performed * Patients who has been less than 1 month since you finished participating in another clinical study, or if you are planning to participate in another clinical study during the study participation and follow-up period within 6 months from the date of selection * Patients who difficult to fill out the consent form for research participation * Other cases where participation in clinical research is difficult in the judgment of the researcher.