The use of Platelet Rich Plasma to augment anterior cruciate ligament reconstruction has been much discussed but not well studied until now. In a prospective randomized trial, Nin et al studied allograft ACL surgery with and without PRP.
"We prospectively randomized 100 patients undergoing arthroscopic patellar tendon allograft ACL reconstruction to a group in whom platelet-enriched gel was used (n = 50) and a non-gel group (n = 50). The platelet concentration was 837 x 10(3)/mm(3), and the gel was introduced inside the graft and the tibial tunnel. The use of PDGF, on the graft and inside the tibial tunnel, in patients treated with bone-patellar tendon-bone allografts has no discernable clinical or biomechanical effect at 2 years' follow-up." Read Full Abstract
This is a good example of where PRP may NOT be helpful.