Importance

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Abstract

A prosthetic joint includes: (a) a first member including a bone-implantable surface, comprising rigid material, and including a body having a cantilevered perimeter flange that defines a wear-resistant, concave first contact surface having a protruding rim and a recessed central portion; (b) a second member including a bone-implantable surface and comprising rigid material with a wear-resistant, convex second contact surface; (c) where the contact surfaces bear directly against each other, transferring axial and lateral loads between the members, while allowing pivoting motion therebetween; (d) wherein the flange is shaped and sized so as to deform elastically, permitting the first contact surface to conform in an irregular shape to the second contact surface when the joint is loaded; and (e) wherein at least one of the bone-implantable surfaces includes at least one mechanical feature configured to maintain the associated member in a specific position and/or orientation relative to bone.

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First Claim