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KMID : 0350519950480041061
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Journal of Catholic Medical College
1995 Volume.48 No. 4 p.1061 ~ p.1071
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The Changes of Cement-bone Interfacial Shear Strength According to Contact Area of the Bone Mineral Partieles at the Surface of Bone Mineral Partiele Impregnated Bone Cement
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Abstract
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This study was designed to desined to demonstrate the presence of bone particles at the surface of the bone mineral particle impregnated bone cement ; to determine the amount of bone particle content, if any exist, and; to explore underlying
relationships between the contact area of the bone particles and the interfacial shear strength before and after decalcification. For this purpose, specimens with a thickness of 2 mm were harvested from canine femurs after total hip arthroplasty
using
bone mineral impregnated bone cement with 0, 10, and 30 weight percent bone mineral particles. A confocal laser scanning microscope was used to analyze the surface of the specimen. Push-out test with an MTS machine were performed to determine the
interfacial shear strength.
@ES The following results were obtained ;
@EN (1) The contact area of the bone mineral particles at the surface of the bone mineral particle impregnated bone cement increased in relation to the weight percent content.
(2) the interfacial shear strength of the bone mineral particle impregnated bone cement was less than that of the bone cement during the period from immediately after surgery to 12 weeks postoperatively.
(3) Temporal increase in interfacial shear strength was not observed in both bone cement and bone mineral particle impregnated bone cement.
In conclusion, this study demonstrated a contradiction fact from the published results in which an increase in interfacial shear strength was reported with bone mineral particle impregnated bone cement. Therefore, we wish to remain cautious about
using
the bone mineral particle impregnated bone cement until its effectiveness is demonstrated.
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