Schreurs B W, Spierings P T, Huiskes R, Slooff T J
Department of Orthopedics, University of Nijmegen, The Netherlands.
Acta Orthop Scand. 1988 Aug;59(4):403-9. doi: 10.3109/17453678809149391.
We investigated four acrylic cement preparation techniques for their effects on cement porosity: hand mixing, pressurization in a pneumatic pistol, centrifugation, and vacuum mixing. All the techniques were tested on three types of cement with different viscosity characteristics. The best results were obtained with vacuum mixing using a newly designed experimental system, yielding porosity reductions of 60-80 percent relative to hand mixing. Vacuum mixing with a commercial system was also effective, but to a somewhat lesser extent. Pressurization and centrifugation had no substantial effect on the overall porosity. Centrifugation led to considerable nonuniformity in the distribution of pores and additives.
手工搅拌、气动枪加压、离心和真空搅拌。所有技术均在三种具有不同粘度特性的骨水泥上进行测试。使用新设计的实验系统进行真空搅拌获得了最佳结果，与手工搅拌相比，孔隙率降低了60% - 80%。使用商业系统进行真空搅拌也有效，但程度稍小。加压和离心对总体孔隙率没有实质性影响。离心导致孔隙和添加剂分布出现相当大的不均匀性。
