Patent ID: 7608110

Claim:
A device for replacement of a proximal end of a radius bone in an elbow joint, comprising: an elbow prosthesis including a body portion including a stem configured to be received in a bore of a radius bone, the stem defining a longitudinal axis; and a radial head portion having a shape corresponding to a proximal head of a radius bone to permit articulation of the head portion with a humerus bone and an ulna bone adjacent the radius bone in an elbow joint, the head portion being mounted on the body portion and including a side wall defining medial, lateral, anterior, and posterior surface regions and also including a concave proximal articulation surface defining a proximal plane that is tilted towards the medial and posterior surface regions at a fixed angle from perpendicular to the longitudinal axis, the fixed angle being defined by manufacture of the body and head portions, wherein the head portion is elongated along a first head axis that is orthogonal to the longitudinal axis, wherein a second head axis is coplanar with the first head axis and orthogonal to both the longitudinal axis and the first head axis, and wherein the proximal plane intersects a plane containing the first and second head axes to define a line that is oblique to the first and second head axes, therefore the head portion being bilaterally asymmetrical such that the head portion is configured to replace either a right radial head or a left radial head, but not both, and wherein the body portion and the head portion are provided by a body component and a head component that are discrete from one another.