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
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Abstract
An orthopaedic prosthesis system 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 be positioned between the femoral component and the tibial tray. An elongated pin rotatably couples the tibial insert to the femoral component.
Claims20
An orthopaedic prosthesis system, 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,
- a tibial insert configured to be positioned between the femoral component and the tibial tray, the tibial insert including an inferiorly-extending tab that is configured to engage the tibial tray to limit rotation of the tibial insert relative to the tibial tray about a first axis extending in an inferior-superior direction, and
- an elongated pin extending along a second axis extending in a medial-lateral direction, the elongated pin rotatably coupling the tibial insert to the femoral component, wherein the femoral component is configured to rotate about the second axis relative to the tibial insert over a range of motion.
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 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 (i) a cavity sized to receive the elongated stem of the first implantable prosthetic component, and (ii) an inferiorly-extending tab that is configured to engage the second implantable prosthetic component to limit rotation of the insert prosthetic component relative to the second implantable prosthetic component about a first axis extending in an inferior-superior direction,
- wherein the first body is configured to rotate about a second axis relative to the insert prosthetic component over a first range of motion, the second axis extending in a medial-lateral direction.
A method of performing an orthopaedic surgical procedure,
- selecting a tibial insert for use with a femoral component configured to be attached to a distal end of a patient's femur and a tibial tray configured to be attached to a proximal end of a patient's tibia,
- attaching a first tab to the tibial insert, the first tab configured to permit a first range of rotation between the tibial tray and the tibial insert,
- evaluating a range of motion of the patient's femur relative to the patient's tibia with the tibial insert and the first tab positioned between the distal end of the patient's femur and the proximal end of the patient's tibia,
- selecting a second tab configured to permit a second range of rotation between the tibial tray and the tibial insert,
- attaching the second tab in place of the first tab,
- evaluating the range of motion of the patient's femur relative to the patient's tibia with the tibial insert and the second tab positioned between the distal end of the patient's femur and the proximal end of the patient's tibia, and
- coupling the femoral component to the tibial insert with an elongated pin extending in a medial-lateral direction,
- wherein the femoral component is configured to rotate about a first axis defined by the elongated pin.
Dependencies are inferred from the claim text.