The risk of notching the anterior femoral cortex with the use of navigation systems in total knee arthroplasty
The risk of notching the anterior femoral cortex with the use of navigation systems in total knee arthroplasty
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DOI：
10.1007/s00167-009-0927-5
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发表时间：
2010-06-01
影响因子：
3.8
通讯作者：
Nakamura, Hiroaki
中科院分区：
文献类型：
--
作者：
Minoda, Yukihide;Kobayashi, Akio;Nakamura, Hiroaki
最近，在全膝关节置换术(TKA)中引入了导航系统，以实现更可靠的假体对齐。在矢状面上，导航系统有两个重要要求：(1)垂直于股骨机械轴线的切割；(2)防止股骨前皮质的切迹。然而，这两个要求可能会发生冲突。测量并比较站立状态下全下肢X线片导航系统股骨前皮质线与股骨四个矢状轴之间的夹角。在导航系统X线片上模拟的这四个矢状轴相对于股骨前皮质线的伸展，男性为40-85%，老年女性为65-100%。目前的研究表明，导航系统存在股骨前皮质切迹的潜在风险。
Use of navigation systems has recently been introduced in total knee arthroplasty (TKA) to achieve more reliable prosthetic alignment. In the sagittal plane, there are two important requirements for navigation systems: (1) perpendicular cut to the femoral mechanical axis and (2) prevention of notching of anterior femoral cortex. These two requirements, however, may conflict. The angles between the line of the anterior femoral cortex and four sagittal femoral mechanical axes for navigation systems using radiographs of the entire lower extremity, while standing were measured and compared. These four sagittal axes simulated on the radiographs in navigation systems were in extension relative to the line of the anterior femoral cortex in 40-85% of cases in male and 65-100% in elderly female. The present study showed that navigation systems have the potential risk for notching of anterior femoral cortex.