Patent ID: 8790411

Claim:
A set of femoral components of different sizes for an artificial knee joint, the set comprising in combination: at least two femoral components of different fixed size; each said femoral component including a patellar flange portion, a medial condylar leg, a lateral condylar leg, a distal face having a curving contour and adapted to abut portions of the artificial knee joint distal to said femoral component in a manner allowing articulation therebetween, and an internal box face having at least three facets including a distal facet adapted to be oriented close to perpendicular to a centerline of a femur to which the femoral component is adapted to attach, a posterior facet and an anterior facet, said posterior facet and said anterior facet generally opposing each other and on opposite sides of said distal facet; said distal facet having a common size for each of said at least two femoral components; wherein said internal box face of each of said at least two femoral components includes a posterior diagonal facet and an anterior diagonal facet, said posterior diagonal facet located between said posterior facet and said distal facet, said anterior diagonal facet located between said anterior facet and said distal facet and having a length equal to a distance between said anterior facet and said distal facet, said distal facet having a length equal to a distance between said posterior diagonal facet and said anterior diagonal facet, for the purpose of allowing simplified forming of a distal end of a femur to fit with one of said at least two femoral components; said distal facet and said anterior diagonal facet of each of said at least two femoral components formed of a common mass of material joined together at a fixed transition line between said distal facet and said anterior diagonal facet; and wherein the length of said anterior diagonal facet of each of said at least two femoral components is of a different length than said anterior diagonal facet of each of the other of said at least two femoral components.