Femoral implant and tibial implant, in particular as part of a knee prosthesis, and knee prosthesis comprising a corresponding femoral implant and / or tibial implant

摘要

A knee prosthesis having a femoral implant (20) and a tibial implant (40), the femoral implant (20) having a patellar guide track (21) with a proximal (22) and a distal (23) section, a lateral condylar element (26), and a medial condylar element (20). 27), wherein the width of the patellar guide track (21) increases from the distal (bd) to the proximal section (bp), such that a patella or patellar implant slides on the patellar guide track (21) independent of an anatomical Q angle in that the width (bd) of the patellar guide track (21) in the distal section (23) is approximately 14.20 mm to 14.50 mm, in particular approximately 14.30 mm to 14.15 mm, in particular approximately 14.39 mm, and the width (bP) in the proximal section (22) is about 15.00 mm to 15.40 mm, in particular about 15.10 mm to 15.30 mm, in particular about 15.23 mm, the widths (bp; bd ) of the patellar guide track (21) between a transition of a concave radius into a convex radius of the patella Slideway (21) is measured, wherein the path of movement of the patella or Patellaimplantats describes an S-shape.