Increased varus-valgus tilting of screw-fixated knee prostheses. Stereoradiographic study of uncemented versus cemented tibial components.
Increased varus-valgus tilting of screw-fixated knee prostheses. Stereoradiographic study of uncemented versus cemented tibial components.
复制标题
螺钉固定膝关节假体的内翻-外翻倾斜增加。
DOI：
10.1016/s0883-5403(06)80219-6
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
J. Kärrholm
中科院分区：
文献类型：
--
作者：
K. Nilsson;J. Kärrholm
26名患有骨关节病的女性和3名男性（34个膝关节）使用Miller-Galante I （Zimmer, Warsaw， IN）假体进行手术。患者随机分为骨水泥固定组和非骨水泥固定组。所有患者均接受四钉钛合金胫骨板，下表面为钛纤维网。在未胶结的膝关节上加4颗螺钉。术后前2年通过x线立体摄影分析确定胫骨假体的固定情况。记录整个胫骨部件的旋转，以及假体边缘各部分的近端或远端平移，对应于下沉和上升。未胶结的假体在前6周表现出几乎所有的旋转和平移，而胶结后的假体在2年内表现出逐渐增加的迁移。在整个研究期间，无骨水泥膝关节的胫骨构件绕矢状轴旋转明显增加。这与未胶结的膝关节内侧或外侧下沉增加相对应，而两组的上升相等。手术后3个月，薄的（8.5 mm）未胶结的胫骨假体比厚的胫骨假体在内侧或外侧边缘表现出更多的下沉。
Twenty-six women and three men (34 knees) with osteoarthrosis were operated with the Miller-Galante I (Zimmer, Warsaw, IN) knee prosthesis. The patients were randomized to either cemented or uncemented fixation of the tibial component. All patients received a TiVaAl alloy tibial plate with four pegs and titanium fiber-mesh undersurface. In the uncemented knees four screws were added. The fixation of the tibial component was determined by roentgen stereophotogrammetric analysis during the first 2 postoperative years. Rotations of the entire tibial component were recorded, as well as proximal or distal translation of various parts of the prosthetic edge corresponding to subsidence and lift-off. The uncemented components displayed almost all rotation and translation during the first 6 weeks, whereas the cemented ones displayed a more gradually increasing migration during the 2 years. Tibial component rotation about the sagittal axis was significantly increased in the uncemented knees throughout the investigation period. This corresponded to increased subsidence medially or laterally in the uncemented knees, whereas lift-off was equal in the two groups. Thin (8.5 mm) uncemented tibial components displayed more subsidence than the thicker ones at the medial or lateral edge 3 months after surgery.