An orthopaedic joint prosthesis may include a first component, a bearing
component, and a third component. The first component has a base and a
keel protruding from the base to extend into a first bone. The keel's
longitudinal axis is offset from a geometric center of the base. The base
has a first articular surface and the bearing component has a second
articular surface shaped to articulate with the first articular surface.
A feature unitary with the first component reversibly attaches to the
bearing component. The bearing component has a third articular surface
shaped to articulate with a fourth articular surface on the third
component. A distraction feature of the bearing component is shaped to
provide alignment and/or distraction between the first articular surface
and the fourth articular surface during insertion of the bearing
component into a joint space between the first and second bones.