Long-term results after total condylar knee arthroplasty. Significance of radiolucent lines.
Long-term results after total condylar knee arthroplasty. Significance of radiolucent lines.
复制标题
全膝关节置换术后的长期结果。
DOI：
10.1097/00003086-198703000-00023
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发表时间：
1987
影响因子：
4.2
通讯作者：
J. P. Cella
中科院分区：
文献类型：
--
作者：
M. Ecker;P. Lotke;R. Windsor†;J. P. Cella
在一项对 123 例全髁膝关节置换术进行的前瞻性研究中，65% 的膝盖在胫骨组件周围的骨水泥界面处发现了射线可透线。 36% 的人的线很细（小于 2 毫米），并且位于内侧或外侧胫骨平台下方。 22% 的患者在内侧和外侧平台下均可见细线。任何位置的细射线可透线的出现与最终术后临床结果之间没有统计学上显着的相关性。 7% 的患者在假体中央钉以及两个平台下方发现粗线（大于 2 毫米），这与效果不佳有关。将 1 毫米射线可透接口连接到各种胫骨组件上，然后将其粘合到尸体膝盖上。对于聚乙烯总髁部件，假体的屈曲或旋转超过 5 度、伦琴光束的角度超过 6 度或光束偏移超过 2.5 厘米，都会妨碍射线可透线的可视化。对于金属背衬组件，超过 4 度的弯曲会遮挡线条。因此，术后X光片的极其仔细的定位对于评估全膝关节置换术后的射线可透线至关重要。
In a prospective study of 123 total condylar knee arthroplasties, radiolucent lines were noted at the bone-cement interface about the tibial component in 65% of the knees. In 36%, the line was thin (less than 2 mm) and under either the medial or lateral tibial plateau. In 22%, thin lines were seen under both the medial and lateral plateaus. There was no statistically significant correlation between the occurrence of thin radiolucent lines in any location and the eventual postoperative clinical result. In 7%, thick lines (greater than 2 mm) were noted about the central peg of the prosthesis as well as under both plateaus and were associated with poor results. A 1-mm radiolucent interface was attached to various tibial components, which were then cemented into cadaver knees. For the polyethylene total condylar component, flexion or rotation of the prosthesis more than 5 degrees, angulation of the roentgen beam more than 6 degrees, or offsetting the beam more than 2.5 cm prevented visualization of the radiolucent line. With metal-backed components, more than 4 degrees of flexion obscured the lines. Therefore, extremely careful positioning of postoperative radiographs is essential for evaluating radiolucent lines after total knee arthroplasty.