| 摘要 |
<p>A tibial tray (1) for a knee joint prosthesis comprises a platform (4) including a proximal bearing surface (5) and a distal fixation surface (6). A keel (9) projects from the distal fixation surface (6). The keel (9) is located centrally of the tibial tray (1) in a medial-lateral direction and is substantially planar in a sagittal place with a distal edge (10) that extends obliquely with respect to the proximal bearing surface (5) of the platform (4). Preferably, the keel (9) is substantially triangular is shape and has its deepest part towards the posterior aspect of the tray (1). A knee joint prosthesis including the tibial tray (1) is also provided. Preferably, this prosthesis comprises a unicondylar prosthetic device with a femoral component (2) adapted for attachment to a femur and a floating insert (3) adapted to fit between the femoral component (2) and the tibial tray (1) when the prosthesis is implanted in a patient.</p> |
