Platelet-rich plasma injections are used to treat a variety of injuries, particularly those incurred during athletic activities, according to the American Academy of Orthopaedic Surgeons. Many prominent athletes have stated that PRP treatment resulted in faster recovery from chronic tendon injuries and sprained knees.
Platelets are tiny solid components in blood responsible for clotting, explains the American Academy of Orthopaedic Surgeons. Platelets also contain protein called growth factors, which are integral for healing injuries. PRP is created by drawing blood from a patient, separating and multiplying the platelet concentration, then mixing the components again. The effectiveness of PRP treatment is inconclusive as of 2015 and varies according to the area being treated, the patient's overall health and whether the injury is chronic or acute.