Platelets, also known as thrombocytes, are a part of the blood, along with plasma, red and white blood cells. Platelets play a key role in the body’s ability to heal itself and PRP therapy is a form of regenerative medicine which harnesses and amplifies the abilities of platelets' natural growth factors.  Platelet-rich plasma (PRP) therapy uses injections of a concentration of a patient's own platelets to accelerate the healing of injured tendons, ligaments, muscles and joints.