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Patello-femoral prosthesis

a femoral and patellofemoral technology, applied in the field of patellofemoral prosthesis and prosthesis, can solve the problems of limited procedure, significant pain and potential damage to the bone surface, and weak point in the cartilage of the damaged area that is prone to continued degradation

Active Publication Date: 2007-12-27
LOTKE PAUL A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The damaged area becomes a weak point in the cartilage that is prone to continued degradation over time.
Ultimately, the damage can lead to bone-to-bone contact during articulation of the joint, resulting in significant pain and potential damage to the bone surfaces.
For instance, in a patello-femoral procedure, the procedure is limited to the engagement surfaces between the femur and the patella.

Method used

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Examples

Experimental program
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Embodiment Construction

[0007] A patello femoral prosthesis is provided for repairing surfaces of the patello-femoral joint. A patella prosthesis is provided for replacing a surface of the patella and a femoral prosthesis is provided for replacing surfaces of the femur. The patella prosthesis is configured to cooperate with a groove in the femoral prosthesis. The femoral prosthesis is configured to overlay a portion of the trochlear groove and the intercondylar notch of the femur. Preferably, the femoral prosthesis is configured to cooperate with a unicompartmental prosthesis that is configured to cover an articular surface of one of the condyles of the femur.

[0008] A method for implanting a patello-femoral prosthesis is also provided. A portion of the patella is resected and a patellar prosthesis is attached to the patella. A portion of the trochlear groove and a portion of the intercondylar notch are also resected to form a recess. Preferably, the resected portion of the intercondylar notch extends alon...

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Abstract

A patello-femoral prosthesis is provided for replacing the engagement surfaces between the patella and the femur. The prosthesis is configured to cover the trochlear groove and extend into the intercondylar notch without extending onto the articulating surfaces of the condyles. A method is also provided for implanting a patello-femoral prosthesis in which a portion of the trochlear groove and intercondylar notch are resected and the prosthesis is implanted over the femur that had portions resected.

Description

FIELD OF THE INVENTION [0001] The present invention relates to the field of prosthetics for knee replacement. More particularly, the present invention relates to a prosthesis for replacing the articulating surfaces of the knee. Specifically, the invention relates to a prosthesis for replacing the articulating surfaces of the patella and femur. In addition, the present invention relates to a method of repairing a knee, and specifically a method for repairing the articulating surfaces of the patella and femur. BACKGROUND OF THE INVENTION [0002] The knee is formed where the thigh bone meets the shin bone. The knee includes three bones, the femur (thigh bone), tibia (shin bone) and patella (knee cap). The distal end of the femur sits on top of the tibia, and the patella is on the front of the femur. [0003] The three bones in the knee form two joints. The first is the tibio-femoral joint, which relates to the joint where the femur meets tibia. The second joint is the patello-femoral join...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/38
CPCA61F2/3877A61F2310/00179A61F2310/00029
Inventor LOTKE, PAUL A.
Owner LOTKE PAUL A
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