Wyatt, Gerber, Burke and Badie
Prosthetic body for bone substitute and a method for the preparation thereof
 The inventive prosthetic body for bone substitute is a sintered body of hydroxyapatite and characterized by the open pore structure with a pore diameter in a specified range forming a porosity of 20 to 40% and a bending strength of at least 100 kg/cm.sup.2. The sintered body can be prepared by blending powders of hydroxyapatite and a thermally decomposable substance, e.g. crystalline cellulose, each having a specified particle size distribution, in a specified proportion and shaping and sintering the powder blend. 
TDK Corporation
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Susumu Hiroyasu Nobuharu Shoichi
Takata Noma Takai Wakabayashi