Knee instruments and methods
AssigneeE. Marlowe Goble
InventorsE. Marlowe Goble, Carlyle J. Creger, Daniel J. Triplett
Life of this patent
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Abstract
Knee arthroplasty instrument systems directly reference and align with the anterior distal femoral cortex and the mechanical axis of the leg. The anterior femoral resection is aligned in the same plane as the anterior distal femoral cortex. The center of the femoral head, the medial/lateral center of the distal femur, the medial/lateral center of the proximal tibia, and the second toe, medial/lateral center of the ankle, or anterior tibial spine are all aligned to the mechanical axis of the leg. Methods of using the instrument systems are disclosed.
Claims26
A system for inserting a pin in a bone, comprising:
- a base with a bone contacting surface having an edge;
- an alignment rod coupled to the base;
- and
- a pin guide with a hole to receive the pin;
- wherein when the edge references a planned resection exit location on an exterior cortical surface of the bone and the alignment rod is aligned with a mechanical axis of the bone, the hole is in a defined orientation relative to the bone contacting surface and the mechanical axis.
A system for inserting a pin in a bone, comprising:
- means for referencing a planned resection exit location on an exterior cortical surface of the bone;
- means for aligning with a mechanical axis of the bone;
- and
- means for positioning a pin hole of a pin guide in a defined orientation relative to the planned resection exit location and the mechanical axis.
A method for inserting a pin in a bone, comprising:
- referencing a planned resection exit location on an exterior cortical surface of the bone with a base component;
- aligning an alignment rod with a mechanical axis of the bone, wherein the alignment rod is coupled to the base component;
- and
- inserting a pin into the bone while the base component references the planned resection exit location and the alignment rod is aligned with the mechanical axis so that the pin is in a defined orientation relative to the planned resection exit location and the mechanical axis.
Dependencies are inferred from the claim text.