Modular knee prosthesis system for use with different load requirements

A modular orthopaedic implant system comprising:

• a first implant component having an opening and a first bore defined by a tapered wall, the first bore having an axial length, a maximum transverse dimension at the opening, a minimum transverse dimension at an end position spaced from the opening and an intermediate transverse width at a position between the opening and the end position;
• a second implant component having an opening and a second bore defined by a tapered wall, the second bore having an axial length, a maximum transverse dimension at the opening, a minimum transverse dimension at an end position spaced from the opening and an intermediate transverse width at a position between the opening and the end position;
• a third implant component having a post at one end, the post comprising a tapered outer surface having a frusto-conical shape, an axial length, a minimum transverse width at an end of the post, a second transverse width at a position spaced axially from the end and an intermediate transverse width at a position between the end and the position of the second transverse width, the intermediate transverse width being greater than the minimum transverse width and less than the second transverse width;
• wherein:
• the axial length and transverse dimensions of the first bore of the first implant component and the axial length and transverse dimensions of the post of the third implant component allow for the outer surface of the post to frictionally lock with the tapered wall of the first bore at a first axial position along the post;
• the axial length and transverse dimensions of the second bore of the second implant component and the axial length and transverse dimensions of the post of the third implant component allow for the outer surface of the post to frictionally lock with the tapered wall of the second bore at a second axial position along the post;
• and
• the first axial position is different from the second axial position.

A modular orthopaedic implant system comprising:

• a first implant component having an opening and a first bore defined by a threaded internal surface, the first bore extending from the opening and having an axial length;
• a second implant component having an opening and a second female bore defined by a threaded internal surface, the second bore extending from the opening and having an axial length;
• a third implant component having a post at one end, the post having a threaded outer surface and an axial length;
• wherein:
• the third implant component can be assembled with the first implant component by extending the threaded post into and engaging the threaded internal surface of the first bore, the third implant component having a fully engaged position defined by the maximum extent to which the post can extend into the first bore;
• the third implant component can be assembled with the second implant component by extending the threaded post into and engaging the threaded internal surface of the second bore, the third implant component having a fully engaged position defined by the maximum extent to which the post can extend into the second bore;
• when the third implant component is in the fully engaged position in the first bore of the first implant component, a first received length of the post is received in the first bore;
• when the third implant component is in the fully engaged position in the bore of the second implant component, a second received length of the post is received in the second bore;
• and
• the first received length of the post is different from the second received length of the post.