Femoral sizing apparatus and method
First Claim
Patent Images
1. A sizing apparatus for determining the anterior-posterior size of a distal end of a femur comprising:
- a block having a face engageable with the distal end of the femur, the block having an upper portion including a U-shaped member with two pads engageable with the distal end of the femur, and a rod extending between the pads in a medial-lateral direction, the block having a base spaced apart from the rod;
a body having a longitudinal bore, the body slidably mounted on the rod relative to the block in a medial-lateral direction, the rod passing through an aperture of the body, the body having a lower surface slidably contacting an upper surface of the base of the block; and
a stylus having a shaft coupled to the longitudinal bore of the body and moveable in an anterior-posterior direction along the bore.
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Abstract
A sizing apparatus for determining the anterior-posterior size of a distal end of a femur. The apparatus includes a block having a face engageable with the distal end of the femur, and a body mounted on the block and slidable relative to the block in a medial-lateral direction. A stylus is mounted on the body.
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Citations
21 Claims
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1. A sizing apparatus for determining the anterior-posterior size of a distal end of a femur comprising:
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a block having a face engageable with the distal end of the femur, the block having an upper portion including a U-shaped member with two pads engageable with the distal end of the femur, and a rod extending between the pads in a medial-lateral direction, the block having a base spaced apart from the rod; a body having a longitudinal bore, the body slidably mounted on the rod relative to the block in a medial-lateral direction, the rod passing through an aperture of the body, the body having a lower surface slidably contacting an upper surface of the base of the block; and a stylus having a shaft coupled to the longitudinal bore of the body and moveable in an anterior-posterior direction along the bore. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A sizing apparatus for determining the anterior-posterior size of a distal end of a femur, the apparatus comprising:
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a block having an upper portion and a lower portion, wherein the upper portion includes a U-shaped member with two pads engageable with the distal end of the femur, and a rod extending between the pads in the medial-lateral direction, and wherein the lower portion includes a surface engageable with the distal end of the femur, and a base; a body slidably mounted on the rod and slidably supported on the base of the block for movement in the medial-lateral direction, the body having a longitudinal bore and a window opening; and a stylus having a shaft slidably received in the bore for movement in an anterior-posterior direction. - View Dependent Claims (9, 10, 11, 12, 13, 21)
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14. A sizing apparatus for determining the anterior-posterior size of a distal end of a femur, the apparatus comprising:
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a block having a face engageable with the distal end of the femur, the block having an upper portion including a U-shaped member with two pads engageable with the distal end of the femur, a rod extending between the pads in the medial-lateral direction, and a lower portion having a base, the base being spaced apart from the rod; a body having a lower surface slidably mounted on the base, the body having an aperture slidably receiving the rod, the body slidably contacting both the rod and the base and moveable relative to the block in the medial-lateral direction; and a stylus mounted on the body. - View Dependent Claims (15, 16, 17)
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18. A method for determining a size of a distal femur, the method comprising:
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providing a sizing apparatus having a block, the block including a U-shaped member with two pads engageable with the distal end of the femur, a rod extending between the two pads in a medial-lateral direction, and a base, a body slidably mounted on the block in the medial-lateral direction and a stylus extending from a bore of the body, the bore extending in an anterior-posterior direction; engaging a face of the block to the distal femur; selectively sliding the body along the rod in the medial-lateral direction; sliding a lower surface of the body along an upper surface of the base selectively in the medial-lateral direction; moving the stylus to bring a tip of the stylus in contact with an anterior surface of the distal femur; and observing an indicator associated with the movement of the stylus. - View Dependent Claims (19, 20)
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Specification