A prosthesis for implantation in a femur has a metallic stem portion
having a smooth outer surface and a distal tip. A polymethylmethacrylate
(PMMA) sleeve surrounds and is in contact with the stem portion. The
sleeve has a cavity for receiving the stem tip and a bottom of said
cavity spaced from the tip. A metal sheath has a cavity for receiving the
sleeve. The metal sheath has a porous outer tissue ingrowth surface and a
roughened inner surface. The PMMA sleeve is bonded to the inner surface
of the metal sheath with a PMMA bone cement. The stem portion, sleeve and
metal sheath all taper inwardly moving from a proximal stem portion to a
distal stem portion.