Systems and methods relating to a knee prosthesis capable of conversion from a cruciate retaining type prosthesis to a posterior stabilizng type prosthesis

A prosthesis, comprising:

• a femoral component,
• wherein the femoral component comprises a first condyle and a second condyle, wherein the first condyle and the second condyle are disposed apart from one another such that there is a space between the first condyle and the second condyle,
• wherein the first condyle comprises at least a first surface generally facing the second condyle across the space between the first condyle and the second condyle and wherein the second condyle comprises at least a second surface generally facing the first condyle across the space between the first condyle and the second condyle;
• a first attachment mechanism associated with the first surface of the first condyle;
• a second attachment mechanism associated with the second surface of the second condyle;
• and
• a modular stabilizing mechanism,
• wherein the modular stabilizing mechanism comprises a third attachment mechanism and a fourth attachment mechanism;
• wherein the modular stabilizing mechanism is configured to permanently attach in a non-reversible manner to the first condyle of the femoral component via a mating between the first attachment mechanism associated with the first surface of the first condyle and the third attachment mechanism of the modular stabilizing mechanism;
• wherein the modular stabilizing mechanism is configured to permanently attach in a non-reversible manner to the second condyle of the femoral component via a mating between the second attachment mechanism associated with the second surface of the second condyle and the fourth attachment mechanism of the modular stabilizing mechanism;
• and
• wherein the modular stabilizing mechanism is attached to the first condyle and the second condyle of the femoral component from a position in the space between the first condyle and the second condyle.