The Freedom-1 Study is for adults with chronic knee pain, which means pain that lasts for a long time, often due to osteoarthritis. This study tests a new way to help with knee pain using a device that sends small electrical signals to the nerves around the knee. The study will compare people using this device to those who do not to see if it helps reduce pain by at least 50%. Participants will first have a test to see if their knee pain can be temporarily relieved. If successful, they will try a temporary version of the device for one week. If this trial helps, a permanent device may be implanted.

• The study requires multiple visits over two years for check-ups and assessments.
• The device may cause side effects like infections, and the temporary device requires a small procedure.
• Participants need to be over 18, have tried other treatments that didn't work, and not have other major health issues.

Participants will need to agree to follow-up visits and phone calls to monitor pain levels and any side effects. If you are interested, you must meet specific health criteria and be able to understand and consent to the study procedures.