ESPN this morning discussed 
the use of PRP to accelerate the recovery time for pro bowl defensive player Troy Polamalu. Troy suffered a knee MCL tear which is a non-surgical injury that can take anywhere up to 8 weeks to heal. Hopefully with PRP he can cut the recovery process in half. PRP works quicker when there is a new injury to maximize the ongoing healing process.
http://www.youtube.com/watch?v=9WXzz2ndpaQ
Hines Ward received the same treatment to his knee MCL tear accelerate his recovery in the Superbowl
