Tibial knee component with a mobile bearing
    1.
    发明授权
    Tibial knee component with a mobile bearing 有权
    胫骨膝部件带有移动轴承

    公开(公告)号:US06319283B1

    公开(公告)日:2001-11-20

    申请号:US09346850

    申请日:1999-07-02

    IPC分类号: A61F238

    CPC分类号: A61F2/3886 A61F2/3868

    摘要: An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray with a proximal tibial plateau and a projection extending generally orthogonal to the tibial plateau. The tibial tray also includes a distally extending stem. A bearing is coupled with the tibial plateau and has an articular bearing surface for engagement with a femoral component. The bearing is rotationally movable between a first rotational limit and a second rotational limit about an axis extending generally orthogonal to the tibial plateau. The bearing has a backing surface engaging the tibial plateau which is sized and shaped such that the backing surface is substantially entirely supported by the tibial plateau at any position during rotational movement between the first rotation limit and the second rotational limit.

    摘要翻译: 用于植入在胫骨近端内的整形外科膝部部件包括具有近端胫骨平台的胫骨托和大致垂直于胫骨平台延伸的突出部。 胫骨托还包括一个远端延伸的杆。 轴承与胫骨平台联接并且具有用于与股骨部件接合的关节轴承表面。 所述轴承可绕第一旋转极限和围绕大致垂直于胫骨平台延伸的轴线的第二旋转极限旋转移动。 轴承具有与胫骨平台接合的背衬表面,其尺寸和形状使得背衬表面在第一旋转极限和第二旋转极限之间的旋转运动期间的任何位置处基本上完全由胫骨平台支撑。