Elbow prosthesis

A prosthetic elbow kit comprising:

• a first stem structure having a proximal end and a distal end, the proximal end adapted to fit within a medullary canal of a humerus, the distal end terminating at a pair of furcations;
• a first bearing component having a pair of slotted apertures and first and second condyle portions, each of the slotted apertures slidingly engaging one of the pair of furcations, each of the first and second condyle portions having a first convex spherically-shaped bearing portion that has an apex on a first axis that is substantially perpendicular to a second axis of each slotted aperture, wherein collectively the first convex spherically-shaped bearing portion of both the first and second condyle portions define a first bearing surface;
• and
• a second stem structure having a proximal end and a distal end, the distal end of the second stem structure adapted to fit within an ulna;
• and
• a second bearing component coupled to the proximal end of the second stem structure, the second bearing component including a pair of concave spherically-shaped bearing portions that collectively define a second bearing surface configured to mate with the first bearing surface;
• wherein each slotted aperture is defined by a first passage in an exterior sidewall and a second passage in an exterior end wall of the first and second condyle portions;
• wherein one furcation is operable to slide into the slotted aperture through the first passage.

A prosthetic elbow kit comprising:

• a first stem structure having a proximal end and a distal end, the proximal end adapted to fit within a medullary canal of a humerus, the distal end terminating at a pair of furcations;
• a first bearing component, including,
• a first condyle portion extending along a first axis having a first side defining a first slotted aperture, wherein the first slotted aperture is a depression in an end wall of the first condyle portion that defines a second axis non-parallel to the first axis and a second side extending along the first axis away from the first side defining a first convex spherically-shaped bearing portion being convex along the first axis away from the first side, and
• a second condyle portion extending along a third axis having a third side defining a second slotted aperture, wherein the second slotted aperture is a depression in an end wall of the second condyle portion that defines a fourth axis and a fourth side extending along the third axis away from the third side defining a second convex spherically-shaped bearing portion being convex along the third axis away from the third side,
• wherein the first convex spherically-shaped bearing portion and the second convex spherically-shaped bearing portion collectively define a first bearing surface;
• a second stem structure having a proximal end and a distal end, the distal end of the second stem structure adapted to fit within an ulna;
• and
• a second bearing component coupled to the proximal end of the second stem structure, the second bearing component including,
• a pair of opposed concave spherically-shaped bearing portions that collectively define a second bearing surface configured to mate with the first bearing surface.