With cellular therapy, a patient’s own cells can be used in an entirely natural way to repair and regenerate tissues or control pain and inflammation. Cells are harvested from either fat (adipose) or bone marrow and separated and concentrated to create a therapeutic cellular implant, delivered using a needle injection. Existing therapies for OA include short-term symptomatic pain relief from hyaluronic acid and corticosteroid injections and total knee replacement for severe OA.