PROSTHESIS
    1.
    发明申请
    PROSTHESIS 审中-公开

    公开(公告)号:US20090088861A1

    公开(公告)日:2009-04-02

    申请号:US12237094

    申请日:2008-09-24

    CPC classification number: A61F2/3868 A61F2002/30604

    Abstract: A mobile bearing tibial implant is described which comprises a tibial component and a mediscal bearing component. The tibial component comprises a tibial plate having a proximal face and a distal face. A tibial post extends from the distal face of the tibial plate which in use will anchor the tibial plate to the proximal end of a resected tibia. The tibial compent additionally includes a generally rectangular tibial projection extending upwardly from the proximal face of the tibial plate, the central longitudinal plane of the said tibial projection being co-linearly located on the sagittal plane passing substantially through the center of the knee. The meniscal bearing component has a substantially flat distal face for glidable seating on the tibial plate and a proximal face configured to receive in use an articulating condylar surface of a femoral component. The meniscal component has a recess therein opening on the distal face of the component, the recess being shaped to receive the tibial projection and to allow the meniscal bearing component to rotate about a center of rotation passing through the tibial projection but to prevent or limit anterior/posterior translation of the meniscal bearing component on the tibial plate.

    Abstract translation: 描述了一种移动轴承胫骨植入物,其包括胫骨部件和支承中间部件。 胫骨部件包括具有近端面和远侧面的胫骨板。 胫骨柱从胫骨板的远端延伸,在使用中,胫骨板将胫骨板锚定到切除的胫骨的近端。 胫骨部件还包括从胫骨板的近侧面向上延伸的大致矩形的胫骨突起,所述胫骨突起的中心纵向平面共线地位于基本上穿过膝盖中心的矢状平面上。 半月板轴承部件具有基本上平坦的远端面,用于在胫骨板上可滑动的座位,以及近端面,构造成在使用中接收股骨部件的铰接髁表面。 半月板部件在部件的远侧面上具有凹口,该凹部被成形为容纳胫骨突起,并允许半月板轴承部件围绕穿过胫骨突起的旋转中心旋转,但是防止或限制前侧 在胫骨板上的半月板轴承部件的后向平移。

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