| 摘要 |
PURPOSE:To obtain the artificial bone prosthetic material which joins directly to a bone and regenerates the chondrotissue by forming the member of the two-phase structure consisting of a porous part and dense part having specific porosities and integrally forming the porous part and dense part of ceramics contg. calcium and phosphorus. CONSTITUTION:The artificial bone prosthetic material is made of the two-phase structure consisting of the porous part having 40 to 80% porosity and the dense part having <=50% porosity. This porous part and dense part are integrally molded of the ceramics contg. the calcium and phosphorus. The part in contact with the cartilage and soft tissue is formed of the porous part having high bioabsorptivity to expedite the formation of the cartilage. The part to be implanted into the hard tissue of the bone, etc., is formed of the dense part having the higher strength than the strength of the porous part, by which the strength of the bone part is maintained. Since the material is composed of the ceramics contg. the calcium and phosphorus, the prosthetic member which bonds to the bone without using bone cement and does not harm the living body is obtd. |
