| 摘要 |
A surgical method and tool for repairing a natural patella are provided. The method comprises the steps of: (a) preparing a natural patella by removing a portion thereof so as to leave a substantially convex remaining portion; and (b) fixing a patella implant onto the substantially convex remaining portion of the natural patella, the patella implant including: an upper surface for sliding over the femoral articulating member; a substantially concave under surface for fixation to the convex remaining portion of the natural patella; and a circumferential facet. A surgical tool according to the present invention comprises a substantially concave rotatable reaming member, the concavity of the reaming member being substantially equal to the concavity of the undersurface of the patella implant. The reaming member features a bit for drilling a hole in the natural patella so as to accept a peg connected to the patella implant. Alternatively, the bit may be used for guiding the reaming member through a central pre-drilled hole in the natural patella.
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