Patent ID: 8546462

Claim:
A bone cement formed by a combination of solid and liquid components comprising: a solid component including a contrast agent, a polymerization initiator, a calcium phosphate based bone substitute material, and a solid polymer, wherein the contrast agent includes zirconium dioxide at about 40 percent by weight of the solid component, the polymerization initiator in the range of about 0.3 to about 0.5 percent by weight of the solid component, the bone substitute material includes hydroxyapatite at about 15 percent by weight of the solid component, and the solid polymer includes a mixture of poly(methylacrylate-co-methylmethacrylate) and poly(methylmethacrylate) at about 45 percent by weight of the solid component, wherein the poly(methylmethacrylate) is in the range of about 3 percent to about 15 percent by weight percent of the solid polymer, and a liquid component including a liquid monomer, a polymerization accelerator, and optionally, a polymerization inhibitor; wherein the bone cement has an initial injectable viscosity suitable for manual injection onto or into a targeted anatomical location, and wherein said initial injectable viscosity being formed substantially immediately after combining the solid component and liquid component.