假体周围骨密度随不同设计理念的股骨假体组件而变化。
Periprosthetic bone mineral density changes with femoral components of differing design philosophy.
作者信息
Gibbons C E, Davies A J, Amis A A, Olearnik H, Parker B C, Scott J E
机构信息
Chelsea and Westminster Hospital, London, UK.
出版信息
Int Orthop. 2001;25(2):89-92. doi: 10.1007/s002640100246.
Abstract
We measured the bone mineral density in 22 patients with the cylindrical stemmed cobalt-chrome AML prosthesis (collared) and in 22 patients with the tapered stem titanium CLS prosthesis (collarless). DEXA scanning was undertaken at a mean of 40 months in the AML and 52 months in the CLS group from the time of implant insertion. In both groups the greatest mean loss of BMD was found in Gruen zone 7 and the least change in Gruen zone 5. In all zones the BMD loss was greater in the AML group but only statistically significant in zones 6 (P<0.05) and 7 (P<0.01). Although numerous factors affect BMD changes around cementless implants, this study suggests that less bone loss can be associated with the titanium CLS stem.
摘要
我们对22例使用圆柱形钴铬合金AML假体（有领）的患者和22例使用锥形钛CLS假体（无领）的患者进行了骨密度测量。从植入时间起，AML组平均在40个月时、CLS组平均在52个月时进行了双能X线吸收法扫描。两组中，Gruen 7区的平均骨密度损失最大，Gruen 5区的变化最小。在所有区域，AML组的骨密度损失都更大，但仅在6区（P<0.05）和7区（P<0.01）有统计学意义。尽管有许多因素影响非骨水泥型植入物周围的骨密度变化，但本研究表明，钛CLS柄可能与较少的骨丢失有关。
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