US 2014/0236307 A1 · IMPLANT WITH MULTI-DIRECTIONAL PIVOTING

Abstract

Implant with multi-directional pivoting has a first component including a first articular surface and a fore-to-aft and side-to-side rotation device; and a second component including a second articular surface for mating with the first surface and a rotation device receptacle. The first component can be mated to the second through cooperation of the rotation device and receptacle, and the first component can cooperate with the second in articular surface contact. The joint may be a knee prosthesis comprising first femoral and second tibial components, with the first surface a femoral condylar surface and the second surface a tibial condylar surface. Therein, the fore-to-aft component can be considered flexion, with the side-to-side component considered version. A knee prosthesis can also be provided with a patella support on a smooth counter surface from full extension to flexion well past 100 degrees and/or with a mechanism preventing excessive downward tibial component travel.

Claims10

Dependent claims

An implant with multi-directional pivoting comprising a first component including a first articular surface and a fore-to-aft and side-to-side rotation device;

and a second component including a second articular surface for mating with the first articular surface and a rotation device receptacle—said first component matable to said second component through cooperation of the rotation device and the rotation device receptacle, and wherein said first component can cooperate with said second component in contact of the first and second articular surfaces and in articulation of the joint when said first component is mated to said second component, characterized in that, in addition to a measure of rotation about a z-axis generally parallel with aligned long bones into which the implant may be implanted, which would be perpendicular to an x-axis and a y-axis thus, the fore-to-aft and side-to-side rotation device can provide for relative motion not only in a first, fore-to-aft, plane through the x-axis but also in a second, side-to-side, plane generally perpendicular to that of the first plane through the y-axis.

Dependencies are inferred from the claim text.

Implant with multi-directional pivoting

Life of this patent

Implant with multi-directional pivoting

Life of this patent

Abstract

Claims10