McCarthy T C, Wells M K, Gorman H A
Am J Vet Res. 1977 Jan;38(1):75-9.
Bone-methyl methacrylate interfacial shear strength at failure in chronically implanted hip prostheses was studied. Gorman total hip prostheses fixed with methyl methacrylate bone cement were implanted in 6 large dogs. Interface shear strength studies were performed at 8, 16, and 24 weeks. Mechanical testing determined that the mean interfacial shear strength was 15.2 +/- 13.0 kg/cm2. Variability of the data was too great to allow conclusions to be drawn from statistical analysis, but trends in the data were observed. It was concluded that the interfacial bond had sufficient strength to withstand axial loads 3 to 6 times greater than those applied under normal physiologic conditions.
研究了长期植入的髋关节假体在失效时骨-甲基丙烯酸甲酯界面的剪切强度。用甲基丙烯酸甲酯骨水泥固定的戈尔曼全髋关节假体被植入6只大型犬体内。在8周、16周和24周时进行界面剪切强度研究。力学测试确定平均界面剪切强度为15.2±13.0千克/平方厘米。数据的变异性太大，无法通过统计分析得出结论，但观察到了数据的趋势。得出的结论是，界面结合具有足够的强度来承受比正常生理条件下施加的轴向载荷大3至6倍的载荷。
