Patent ID: 7662189

Claim:
A prosthesis for partial replacement of a long bone in humans and animals, said prosthesis comprising: an end component having an internal inwardly tapered recess having an open end; a shaft releasably coupled to said end component, said shaft having a first and second end and at least one notch, wherein said first end of said shaft is tapered and is dimensioned and configured for receipt within said internal inwardly tapered recess of said end component, and wherein said second end of said shaft has an internal inwardly tapered recess having an open end; a stem releasably coupled directly to said shaft, said stem having a longitudinal axis and a first and second end, wherein said first end is intended for engagement in a resected bone having a resected face, and said second end is tapered and is dimensioned and configured for receipt directly within said internal inwardly tapered recess of said second end of said shaft and wherein said tapered second end of said stem corresponds with said internal inwardly tapered recess of said shaft so that when said stem is coupled to said shaft, said tapered second end of said stem is received directly within said internal inwardly tapered recess of said second end of said shaft; and a collar releasably coupled to said shaft, said collar having first and second ends and an inwardly tapered recess, said recess of said collar having first and second open ends in said first and second ends of said collar respectively, the collar having at least one ear for cooperatively engaging said at least one notch on said shaft, when said collar is coupled to said shaft, wherein said second end of said shaft is outwardly tapered and is dimensioned for receipt within said recess of said collar via said first open end of said collar, and wherein an axial length of said shaft is dimensioned such that the second end of said collar abuts the resected face of the bone when the prosthesis is implanted.