Prosthesis for femoral component of knee joint

Claim 2

A prosthetic device for replacing at least a portion of the distal end of a femur comprising a unitary, one-piece device adapted to be connected to the distal end of a resected femur without cement and to replace the condylar surfaces thereof, said prosthesis including (A) a base portion having downwardly facing condylar surfaces, (B) upwardly extending anterior and posterior flanges integral with said base portion, said flanges being designed to engage and compress the anterior and posterior femoral resection surfaces, and (C) the bone engaging surfaces of said flanges being provided with a plurality of toothlike projections of a downwardly angled sawtooth configuration, said projections being adapted to compress the resected bone and anchor said prosthesis thereto.

Claim 3

A femoral prosthesis according to claim 1 which is provided with an anchoring protrusion extending upwardly from the top of said base for connecting the prosthesis to the femur by upward driving implantation.

Claim 4

A prosthetic device for replacing at least a portion of the articulating surfaces of the distal end of a femur comprising a unitary, one-piece device adapted to be connected to the distal end of a resected femur without cement and to replace the condylar surfaces thereof, said prosthesis including (A) a base portion having downwardly facing condylar surfaces, (B) upwardly extending anterior and posterior flanges integral with said base portion, said flanges being designed to engage and compress the anterior and posterior femoral resection surfaces, (C) the bone engaging surfaces of said flanges being provided with a plurality of projections of a downwardly angled configuration, said projections being adapted to compress the resected bone and anchor said prosthesis thereto, and having upper surfaces extending inwardly from said flange surfaces at a shallow angle relative thereto, and lower surfaces extending inwardly at a steep angle relative thereto, and (D) an anchoring protrusion extending upwardly from the top of said base for connecting the prosthesis to the femur by upward driving implantation.

Claim 5

A prosthetic device for replacing at least a portion of the articulating surfaces of the distal end of a femur comprising a unitary, one-piece device adapted to be connected to the distal end of a resected femur without cement and to replace the condylar surfaces thereof, said prosthesis including (A) a base portion having downwardly facing condylar surfaces, (B) upwardly extending anterior and posterior flanges integral with said base portion, said flanges being designed to engage and compress the anterior and posterior femoral resection surfaces, (C) the bone engaging surfaces of said flanges being provided with a plurality of projections of a downwardly angled configuration, said projections being adapted to compress the resected bone and anchor said prosthesis thereto, and having upper surfaces extending inwardly from said flange surfaces at a shallow angle relative thereto, and lower surfaces extending inwardly at a steep angle relative thereto, and (D) an anchoring protrusion extending upwardly from the top of said base for connecting the prosthesis to the femur by upward driving implantation.

Claim 6

A femoral prosthesis according to claim 1 which is provided with an anchoring protrusion extending upwardly from the top thereof which has a C-shaped configuration.