Importance

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Abstract

Bone replacement material to be used by being packed into a bone defective part, wherein the bone replacement material consists essentially of a calcium phosphate based compound and is formed into a pellet and satisfies both of the following conditions (I) and (II): (I) porosity is equal to or less than 75%; and (II) collapsing strength is equal to or more than 15 Mpa. The pellet has a roughly polyhedral shape and is defined by a plurality of surfaces including a pair of opposite, non-parallel surfaces and a surface adjoining to the pair of opposite, non-parallel surfaces, one of the opposite, non-parallel surfaces being inclined at a predetermined angle with respect to the other of the opposite, non-parallel surfaces. The one of the opposite, non-parallel surfaces is non-adjoined with the other of the opposite, non-parallel surfaces in the pellet. The other of the opposite, non-parallel surfaces is perpendicular to the surface adjoining to the pair of opposite, non-parallel surfaces.

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First Claim