期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
卷 18, 期 10, 页码 1931-1937出版社
SPRINGER
DOI: 10.1007/s10856-007-3128-0
关键词
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Porous hydroxyapatite/tricalcium phosphate (HA/TCP) granules were fabricated by a novel technique of vacuum impregnation of reticulated polyurethane (PU) foams with ceramic slip. The resultant granules had 5-10% interconnected porosity with controlled pore sizes necessary to allow bone ingrowth combined with good mechanical properties. Using PU foams with a different number of pores per inch (ppi), porous HA/TCP granules in the size range of 2-8 mm were successfully manufactured. Dieplunger tests were used to compare the compression and relaxation properties of the granules with those of a commercially available bone graft product, BoneSave(R). The results of the die-plunger testing showed that the experimental granules were stiffer than the BoneSave(R) materials and had less of a tendency to crumble to powder after testing. This therefore suggests that these experimental granules would be useful for impaction grafting and space filling applications.
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