Finkelstein J A, Anderson G I, Waddell J P, Richards R R, Hearn T C, Schemitsch E
Department of Surgery, University of Toronto, Ontario, Canada.
J Arthroplasty. 1994 Jun;9(3):317-24. doi: 10.1016/0883-5403(94)90087-6.
A canine total hip arthroplasty model was used to examine micromotion and bone apposition to a proximally two-thirds madreporic-surfaced femoral prosthesis. Micromotion was also measured following initial press-fit implantation into canine cadaveric femora. After initial press-fit fixation and either 6 or 24 months of biologic fixation, micromotion was less than 23 microns in the proximal and midstem regions, a magnitude consistent with bone apposition. Bone apposition was greatest near the junction of the madreporic and smooth surfaces and was not significantly different between 6 and 24 months (51% at 6 months and 47% at 24 months). The quality of the interface tissue appears to be conductive to long-term fixation.
使用犬全髋关节置换模型来检查近端三分之二为多孔表面的股骨假体的微动情况以及骨附着情况。在最初压配植入犬尸体股骨后也测量了微动。在最初压配固定以及生物固定6个月或24个月后，近端和中段区域的微动小于23微米，这一数值与骨附着情况相符。骨附着在多孔表面与光滑表面交界处附近最为明显，6个月和24个月时并无显著差异（6个月时为51%，24个月时为47%）。界面组织的质量似乎有助于长期固定。
