In order to offer a better alternative to treat patients with osteoarthritis (OA) of the knee, Matthew Stiebel, M.D. and Gary Ackerman, M.D. of Palm Beach Sports Medicine, in conjunction with Jupiter Medical Center, have opened a clinical trial of KineSpring, a new implantable device intended to treat the symptoms of pain and loss of function of the knee caused by the disease. Typically, the symptoms of OA are treated with painkillers and steroids as well as braces. The purpose of this research study is to test whether the KineSpring device is safe and provides relief of knee pain, improving knee function.