Adult stem cells are a special type of cell that is found in fat cells and bone marrow. What makes them special is that they can undergo differentiation, a process that allows the stem cell to turn into a cartilage cell or a muscle cell. As a therapy, stem cells can become the type of cell that your body needs in order to heal. E.g. if you have arthritis, a stem cell injection provides your body with stem cells, which turn into cartilage cells, which then try to repair and heal your joint. Stem cell therapy in NYC is often used to treat arthritis, rotator cuff injuries, back and neck pain, and joint pain.