I had it in my elbow. Cost about $700 and my orthopedic surgeon administered it. Didn't work for me. Also, keep in mind, the first couple of weeks will be very painful as the PRP promotes inflammation in the area which is what leads to the bodies healing response. Needless to say, you cannot take any anti inflammatory agents (iburprofin etc) during this period. I would not do it again- at least for an elbow