OsteoSponge® is a patented form of demineralized bone matrix (DBM) made from 100% bone. Derived from cancellous bone, OsteoSponge® provides a natural scaffold for cellular ingrowth and exposes bone-growth-inducing proteins to the healing environment. The malleable properties of OsteoSponge® enable it to fill and conform to irregular bony defects. Due to its shape memory characteristics, OsteoSponge® will expand to completely fill a void after graft placement. The unique mechanical and biological properties make OsteoSponge® an ideal bone graft for use with spinal fusion devices, in arthrodesis, or in fracture sites.