The prosthesis includes a main element wherein one part forms an
articulation side, an element called the "radial" element and an
intermediate sliding element. The articulation side that delimits the
part of the main element is convex and presents a round form. The
intermediate element forms a concave articulation side appropriate for
cooperating with the convex articulation side that forms the main
element, this concave articulation side presenting, in sectional view in
the sagittal plane, that is in the plane in which the flexion and
extension movement of the wrist takes place, a rounded circle form very
slightly larger than that of the convex articulation side, and
presenting, in sectional view in the frontal plane, that is in the plane
in which the abduction and adduction of the hand takes place, a rounded
circle form markedly larger than that of the convex articulation side.
