20 patients requiring hindfoot fusion were randomized to receive either a biosynthetic bone graft substitute (Augment Bone Graft, a recombinant form of platelet-derived growth factor (rhPDGF-BB)) or an autologous bone graft (ABG), in order to compare safety and efficacy between the two graft types. The results of this study suggest the biosynthetic bone graft is a safe and efficacious alternative to ABG, which could provide improved outcomes for future patients undergoing procedures requiring bone grafts if this treatment option is incorporated in to common practice.