Patent ID: 8829074

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 is in a range of about 38 to about 42 percent by weight of the solid component, the polymerization initiator is in a range of about 0.3 to about 0.5 percent by weight of the solid component, the bone substitute material includes hydroxyapatite, in a range of about 14 to about 16 percent by weight of the solid component, and the solid polymer comprises a mixture of poly(methylacrylate-co-methylmethacrylate) and poly(methylmethacrylate) in a range of about 43 to about 46 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.