CerzaFCarniSCarcangiuA. Comparison between hyaluronic acid and platelet-rich plasma, intra-articular infiltration in the treatment of gonarthrosis. Am J Sports Med. 2012;40(12):2822-2827.
2.
DaleyELBajajSBissonLJColeBJ. Improving injection accuracy of the elbow, knee, and shoulder: does injection site and imaging make a difference? A systematic review. Am J Sports Med. 2011;39(3):656-662.
3.
PelletierMHMalhotraABrightonTWalshWRLindemanR. Platelet function and constituents of platelet rich plasma. Int J Sports Med. 2013;34(1):74-80.
4.
SundmanEAColeBJFortierLA. Growth factor and catabolic cytokine concentrations are influenced by the cellular composition of platelet-rich plasma. Am J Sports Med. 2011;39(10):2135-2140.
5.
WrightJGSwiontkowskiMFHeckmanJD. Introducing levels of evidence to the journal. J Bone Joint Surg Am. 2003;85(1):1-3.
6.
ZhangWRobertsonJJonesACDieppePADohertyM. The placebo effect and its determinants in osteoarthritis: meta-analysis of randomised controlled trials. Ann Rheum Dis. 2008;67(12):1716-1723.
