The holding power of a metallic device in cancellous bone was tested in sixteen rabbits (n = 16). The device was fixed with the support of polymethyl methacrylate. The fixation firmness was studied radiologically and by measuring the bonding strength. The mean value of the bonding strength was 485 N (n = 6) at 6 weeks, and 557 N (n = 8) at 12 weeks.