Particular anorganic bovine bone substitute with a calcium‐deficient carbonate hydroxyapatite having a crystal size of approximately 10 nm. All proteins are removed from the bovine xenograft via various chemical and physical processes. Its porous structure, like normal bone, is osteoconductive but resistant to resorption, although osteoclasts are identified in lacunae on the surfaces. The surface area is very large, and the modulus of elasticity is similar to that of normal bone.