Patent ID: 6059831
Filing Date: 2000-05-09
Classification: A61B,A61F,Y10S

Abstract:
A method of implanting a uni-condylar knee prosthesis in a patient having a femur and a tibia with a medial compartment and a lateral compartment, the tibia having a midline and an outer edge with a defect on the tibia that results in a sclerotic bone formation that slopes down from the midline to the outer edge of the tibia, said method comprising:providing a femoral component and a tibial component, said tibial component having a proximal surface operable to engage said femoral component and a distal surface operable to engage the tibia, said distal surface declining from the midline to the outer edge, wherein said tibial component is thinner at the midline than at the outer edge and includes at least one peg extending from said distal surface;making a set of bone cuts on the femur that correspond to said femoral component;making a minimal cut on the tibia that slopes from the midline down toward the outer edge following the defect on the tibia to preserve the sclerotic bone formation;forming at least one hole in the tibia that corresponds to said peg on said tibial component to allow for alignment;implanting said femoral component; andaligning and implanting said tibial component on top of the remaining sclerotic bone formation to avoid migration of said tibial component.