PROBLEM TO BE SOLVED: To improve bone formation and shape maintenance properties.SOLUTION: A bone prosthetic material contains calcium phosphate and biodegradable polymers, in the mass ratio of 4:1 or more to less than 10:1. The calcium phosphate contains a plurality of particles with different particle sizes. The particles have the most frequent diameter of 20 μm or less. The biodegradable polymers are crosslinked.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】骨形成性および形状維持性をさらに高める。【解決手段】リン酸カルシウムと生分解性高分子とを、4:1以上10:1未満の質量比で含み、リン酸カルシウムは、粒径が異なる複数の粒子を含み、該粒子の最頻径が20μm以下であり、生分解性高分子が架橋されている骨補填材を提供する。【選択図】図5
