Glyn-Jones S, Hicks J, Alfaro-Adrian J, Gill H S, McLardy-Smith P, Murray D W
Oxford Orthopaedic Engineering Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford, OX3 7LD, UK.
Int Orthop. 2003;27(6):362-5. doi: 10.1007/s00264-003-0500-7. Epub 2003 Aug 12.
It is unclear whether it is best to use high-viscosity or low-viscosity cement for fixation of total hip replacement (THR) femoral components. This study examines the influence of cement viscosity on the migration of the Exeter femoral component using roentgen stereophotogrammetric analysis (RSA). Simplex, CMW1 and CMW3 G cements were examined in a total of 46 patients over a 12-month period. The overall pattern of migration for all cohorts was one of subsidence and rotation into valgus. There was no significant difference in any aspect of migration between the groups. In vitro studies demonstrate that low-viscosity cement forms a more stable bone-cement interface. Several groups have examined the in vivo effect of cement viscosity on stem longevity with conflicting results. For a polished, tapered implant that is designed to subside, cement viscosity does not influence the 1-year migration, and it is therefore unlikely to affect long-term outcome.
对于全髋关节置换（THR）股骨部件的固定，使用高粘度还是低粘度骨水泥最佳尚不清楚。本研究采用X线立体摄影测量分析（RSA）来检测骨水泥粘度对埃克塞特股骨部件移位的影响。在12个月期间，对总共46例患者使用了辛普利斯、CMW1和CMW3 G型骨水泥进行研究。所有队列的总体移位模式是下沉并外旋成外翻。各组之间在移位的任何方面均无显著差异。体外研究表明，低粘度骨水泥形成的骨-水泥界面更稳定。有几个研究小组检测了骨水泥粘度对假体柄使用寿命的体内影响，结果相互矛盾。对于设计用于下沉的抛光锥形植入物，骨水泥粘度不会影响1年的移位情况，因此不太可能影响长期结果。
