Patent ID: 7192448

Claim:
An arthroplasty device for implantation into a bone, comprising: a disc having a threaded outer surface capable of threaded engagement within the interior surface of a bone; a resorbable material, having an outer surface capable of threaded engagement within the interior surface of said bone, contacting said disc; a sleeve having an inner opening and an outer surface, containing at least one section contacting the bone having a textured surface to promote bone ingrowth, sized to fit tightly within the bone; and a prosthetic component comprising an elongated shank having an outer surface extending between a proximal end and a relatively narrow distal end; wherein when said distal end of said prosthetic component is inserted through said sleeve in said bone, said distal end contacts said resorbable material to support said component to decrease stress on said textured surface of said sleeve while said material resorbs.