Marking template for installing a custom replacement device for resurfacing a femur and associated installation method
AssigneeKinamed, Inc.
InventorsRoger Carignan, Clyde R. Pratt
Life of this patent
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Abstract
A replacement device for resurfacing a joint surface of a femur and a method of making and installing such a device is provided. The custom replacement device is designed to substantially fit the trochlear groove surface, of an individual femur, thereby creating a “customized” replacement device for that individual femur and maintaining the original kinematics of the joint. The top surface is designed so as to maintain centrally directed tracking of the patella perpendicular to the plane established by the distal end of the femoral condyles and aligned with the center of the femoral head.
Claims30
A knee prosthesis kit comprising:
- a knee prosthesis custom formed based on preoperative data obtained from a patient, the knee prosthesis configured to substantially allow the original kinematics of the patient's knee;
- and
- an instrument comprising:
- a knee contacting surface with a three-dimensional shape custom formed based on the preoperative data to align with at least a portion of the patient's trochlear groove and to fit at least a portion of the patient's femur;
- and
- a surgical tool guide customized for the patient.
A knee prosthesis kit comprising:
- a knee prosthesis custom formed based on preoperative data obtained from a patient, the knee prosthesis configured to substantially preserve the original kinematics of the patient's knee after removal of at least some bone from the patient's knee;
- and
- an instrument comprising a knee contacting surface with a three-dimensional shape custom formed based on the preoperative data to fit at least a portion of the patient's femur.
A knee prosthesis kit comprising:
- a knee prosthesis custom formed based on preoperative data obtained from a patient, the knee prosthesis configured to maintain the original articulating movement of the patient's knee after removal of at least some bone from the patient's knee;
- and
- an instrument comprising a knee contacting surface with a three-dimensional shape custom formed based on the preoperative data to fit at least a portion of the patient's femur.
Dependencies are inferred from the claim text.