Adjustable modular orthopedic implant

An implantable modular orthopedic prosthesis comprising:

• a first component having an elongated stem with a free end, configured to be situated within the intramedullary canal of a patient's bone, and an opposite end having an articulable tapered bore;
• a second component having a tapered post matingly engageable with the tapered bore formed in the first component, for attaching the first and second components together in a selected fixed rotational conformation;
• and
• a third component having a body with a linearly-extruded cylindrical bore through which the articulable tapered bore and tapered post are telescopically received, wherein the second component has a radially-expandable split collet to pressure lock against the internal surface of the cylindrical bore in a selected axial location to arrest the first, second and third components together in a fixed axial and rotational relationship as the mating tapered post and tapered bore are fully engaged with one another.

An implantable modular hip prosthesis comprising:

• an elongated stem with a free end, configured to be situated within the intramedullary canal of a patient's bone, and an opposite end having an articulating tapered bore;
• a neck having a tapered post matingly engageable with the tapered bore formed in the stem for attaching the neck and stem together in a selected fixed rotational conformation;
• and
• a trocanteric module having a body with a linearly-extruded cylindrical bore through which the articulating tapered bore and tapered post are telescopically received, wherein the neck has a radially-expandable split collet to pressure lock against the internal surface of the cylindrical bore in a selected axial location to arrest the stem, neck and trocanteric module together in a fixed axial and rotational relationship as the mating tapered post and tapered bore are fully engaged with one another.

An implantable modular knee prosthesis comprising:

• an elongated stem with a free end, configured to be situated within the intramedullary canal of a patient's bone, and an opposite end having an articulating portion;
• a tibial tray having another articulating portion matingly engageable with the articulating portion of the stem, for attaching the tray and stem together in a selected fixed rotational conformation;
• and
• a transition module having a body with a proximal shoulder and a linearly-extruded channel through which the articulating portions of the tray and stem are telescopically received, wherein at least one of the tray and stem is radially-expandable to pressure lock against the internal surface of the channel in a selected location to arrest the tray, stem and transition module together in a fixed axial and rotational relationship as the mating articulating portions are fully engaged with one another.

An implantable modular orthopedic prosthesis assembly comprising:

• a first component having an elongated stem with a free end configured to be situated within the intramedullary canal of a patient's bone, and an opposite end having an articulating portion;
• a second component having another articulating portion operatively engageable with the articulating portion of the first component;
• a body having an extruded channel through which the articulating portions are adjustably received;
• and wherein at least one of the first and second components includes a radially flexible portion to pressure lock against an internal surface of the extruded channel and articulating portions of said first and second components to arrest the first and second components and body together in a fixed relative position as the articulating portions are engaged with one another.