Located on Manhattan's Upper East Side, RSI is a world-renowned regenerative-medicine destination for non-surgical, interventional orthobiologic care. Our exceptional team of physiatrists and sports-medicine specialists is dedicated to treating acute injuries and chronic pain associated with the spine, joints and tendons. RSI is the only interventional orthobiologic practice in the world that offers a groundbreaking, proprietary intradiscal procedure that provides superior cell extraction, unsurpassed delivery precision and is performed in less than one hour. Developed by RSI founder Dr. Gregory Lutz, this breakthrough in regenerative medicine has a proven track record of success, without the need for surgery or opioids.