Of 11 patients with prior plating who had nonunion or delayed union of the distal tibial metaphysis and had additional percutaneous autologous bone marrow injection, nine attained bony union within 6 months of bone marrow injection, nine attained bony union within 6 months of bone marrow injection. Various aspirations and cell concentration techniques have been reported to increase the number of progenitor cells, with reported union rates ranging from 62,5% to 90% (Ateschrang et al.,2009; Dallari et al.,2007; Gan et al.,2008; Kitoh et al., 2007; Neen et al., 2006)