“…Different studies have been described in animal models with BMPs, PRPs or mesenchymal stem cells (Boyne, 2001;Srouji et al, 2005;Pradel et al, 2006;Carter et al, 2008;Pieri et al, 2009;Miloro et al, 2010;Mooren et al, 2010;Kazakos et al, 2011). At the moment however, these options are of experimental character and have to be further investigated in clinical trials.…”