Abstract: Bathtubs and methods for making a bathtubs are disclosed. A bathtub may include a shell, a first door, and a second door. The shell defines a bathing well. A portion of the edge of the shell defines a door opening. The first door is coupled to a first side of the door opening. The second door is coupled to a second side of the door opening opposite the first side of the door opening. The first and second doors are movable into a closed position blocking the door opening.

Abstract: An endoprosthetic replacement for the metacarpophalangeal joint has two components, each with a rounded bearing body and integrally projecting intramedullary stem. The metacarpal component body provides two concave grooves separated by a concave rib, and the phalangeal component body provides two convex ribs and a convex groove, these ribs and grooves intermeshing for component engagement. The concave and convex configurations respectively subtend angles less and greater than 180.degree. to allow longitudinal sliding, and the convex groove widens towards one end to allow lateral rocking. The stems lie in the planes of their grooves and ribs, but are respectively inclined and parallel to the arcuate bisectors of such configurations. This allows the central rib and groove to limit the sliding abutment at their ends, with the stems parallel at one limit and angled at the other.