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US 11,116,641 B2Granted
Orthopaedic prosthetic system for a rotating hinged-knee prosthesis
AssigneeDepuy Ireland Unlimited Company
InventorsAaron J. Matyas, Tyler S. Hathaway, Paul B. Sade, Sr., Nathan C. Reeder, Kyle D. Steffe, David E. Rottger, Anthony J. Webb
Life of this patent
Estimating the term…
Abstract
An orthopaedic prosthesis includes a femoral component configured to be attached to a distal end of a patient's femur. A tibial tray is configured to be attached to a proximal end of a patient's tibia. A tibial insert is configured to rotate relative to the tibial tray. A modular insert is received in a cavity defined in the tibial insert. The femoral component is rotatably coupled to the body of the modular insert.
Claims20
An orthopaedic prosthesis, comprising:
- a femoral component configured to be attached to a distal end of a patient's femur,
- a tibial tray configured to be attached to a proximal end of a patient's tibia, the tibial tray including (i) a base having an outer surface, (ii) a post extending distally from the base, and (iii) an aperture extending defined in the post and the base,
- a tibial insert configured to rotate relative to the tibial tray, the tibial insert including (i) a platform shaped to engage the base of the tibial tray, (ii) a stem extending distally from the platform and received in the aperture of the tibial tray, (iii) a cavity extending longitudinally through the platform, and (iv) a tab coupled to the platform, the tab being configured to engage the outer surface of the base to limit rotation of the tibial insert relative to the tibial tray, and
- a modular insert is received in the cavity defined in the tibial insert, the modular insert including (i) an elongated stem, and (ii) a body rotatably coupled to the elongated stem,
- wherein the femoral component is rotatably coupled to the body of the modular insert, the femoral component being configured to rotate about a first axis relative to the tibial insert over a first range of motion, the first axis extending in a medial-lateral direction, and
- wherein the body of the modular insert is configured to rotate relative to the tibial insert about a second axis extending parallel to the first axis over a second range of motion, the second range of motion being less than the first range of motion.
3 more elements
An orthopaedic prosthesis system, comprising:
- a first implantable prosthetic component that is configured to be attached to a distal end of a patient's femur, the first implantable prosthetic component including (i) a first body having a pair of spaced apart curved convex condyle surfaces, (ii) a second body rotatably coupled to the first body, and (iii) an elongated stem rotatably coupled to the second body,
- a second implantable prosthetic component that is configured to be attached to a proximal end of a patient's tibia, and
- an insert prosthetic component configured to be positioned between the first implantable prosthetic component and the second implantable prosthetic component, the insert prosthetic component including a cavity sized to receive the elongated stem of the first implantable prosthetic component,
- wherein the first body is configured to rotate about a first axis relative to the insert prosthetic component over a first range of motion, the first axis extending in a medial-lateral direction, and
- wherein the second body is configured to rotate relative to the insert prosthetic component about a second axis extending parallel to the first axis over a second range of motion, the second range of motion being less than the first range of motion.
2 more elements
An orthopaedic prosthesis system, comprising:
- a first implantable prosthetic component that is configured to be attached to a distal end of a patient's femur and includes a pair of spaced apart curved convex condyle surfaces,
- a second implantable prosthetic component that is configured to be attached to a proximal end of a patient's tibia,
- an insert prosthetic component positioned between the first implantable prosthetic component and the second implantable prosthetic component, the insert prosthetic component including a pair of curved proximal surfaces engaged with the pair of spaced apart curved convex condyle surfaces, and
- an elongated pin extending along a first axis, the elongated pin rotatably coupling the insert prosthetic component to the first implantable prosthetic component,
- wherein the first implantable prosthetic component is configured to rotate about the first axis relative to the insert prosthetic component over a range of motion, the first axis extending in a medial-lateral direction, and
- wherein the curved convex condyle surfaces and the curved proximal surfaces are shaped such that the engagement of curved convex condyle surfaces and the curved proximal surfaces over the range of motion causes the elongated pin to move between a first position and a second position, the second position being located anterior of the first position.
3 more elements
Dependencies are inferred from the claim text.