Patent ID: 8343228

Claim:
An arthroplastic implant for a basilar joint of a hand of a patient comprising: a disk-shaped body having a distal surface and a proximal surface opposite therefrom with the distal surface constructed and arranged to be positioned adjacent a first metacarpal bone at the basilar joint of the hand of the patient, said body having a side surface which extends between peripheral edge portions of said distal and proximal surfaces and which extends around said body; and an anchor peg extending outwardly from a portion of said body that is between said distal surface and said proximal surface to anchor said body within the basilar joint of the hand of the patient, said anchor peg having a central axis which extends through said body and is spaced from said distal and proximal surfaces, said central axis of said anchor peg extends through a first location where said anchor peg is connected with said body and through a second location which is disposed on said side surface; and wherein said distal surface has a convex configuration and curves outwardly away from said proximal surface and said proximal surface has a convex configuration and curves outwardly away from said distal surface, said disk-shaped body having a central portion with a thickness which is greater than an axial extent of said side surface at any location on said side surface.