Another useful therapy is platelet-rich plasma (PRP). Your peripheral blood contains platelets, which act as first responders when there's an injury. They come in and start the clotting mechanism, thereby preventing you from bleeding to death. They also give marching orders to other cells. For example, platelets can command stem cells to multiply and grow, or to differentiate and form new tissue.

These platelets also have many different growth factors associated with them, which can help to promote healing and stop inflammation. PRP involves taking a blood sample and then spinning the blood in a centrifuge to isolate the platelets. The platelet-rich plasma is then injected back into the area that is inflamed.