Patent ID: 6488711
Filing Date: 2002-12-03
Classification: A61F

Abstract:
A prosthetic knee joint for installation between a pair of leg bones, the joint comprising:a cam body for mounting on one of the bones and having a center cam having a pair of part-cylindrical surfaces meeting at a rounded corner, the cam body being formed with a pair of oppositely directed projections having outer surfaces each at least partially offset from the respective part-cylindrical surface and forming outer cams flanking and radially offset from the center cam; and a pair of guide cups for mounting on the other of the bones, receiving the cam body, and each formed internally with respective center and outer arcuate guides engageable in angularly differently offset positions of the bones with the respective cams, the cams and guides being shaped such that on pivoting of the cam body in the guide cups the cams slide on the respective guides.