Surgical technique and instrumentation for minimal incision hip arthroplasty surgery
First Claim
1. An instrument for operating on a medullary canal for installation of a prosthetic stem component, comprising:
- a handle including an elongated shaft extending approximately in a z-direction;
a first offset extending from a lower end of the elongated shaft approximately in a y-direction;
a second offset extending from the first offset approximately in an x-direction; and
a shaping member extending downward from the second offset approximately in the z-direction,wherein the y-direction is substantially perpendicular to the z-direction, and the x-direction is substantially perpendicular to the y-direction and the z-direction,wherein the handle and the shaping member are positioned with respect to one another in a non-planar relationship, andwherein the shaping member further comprises cutting elements and the instrument is a box osteotome for resecting at least a portion of a femoral trochanter.
1 Assignment
0 Petitions
Accused Products
Abstract
Improved instruments for modifying a shape of a proximal femur of a patient for installation of a stem of a femoral component of a prosthetic hip during hip replacement surgery, comprising a handle including an elongated shaft extending downward approximately in a z-direction, a first offset extending from a bottom of the elongated shaft approximately in a y-direction, a second offset extending from the second offset approximately in an x-direction, and a shaping member elongated downward from the second offset approximately in the z-direction. Provided is an improved femoral broach and an improved osteotome. Also provided is a method of improving a patient'"'"'s positioning during hip replacement surgery by using a variable configuration mattress for positioning the patient.
268 Citations
7 Claims
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1. An instrument for operating on a medullary canal for installation of a prosthetic stem component, comprising:
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a handle including an elongated shaft extending approximately in a z-direction; a first offset extending from a lower end of the elongated shaft approximately in a y-direction; a second offset extending from the first offset approximately in an x-direction; and a shaping member extending downward from the second offset approximately in the z-direction, wherein the y-direction is substantially perpendicular to the z-direction, and the x-direction is substantially perpendicular to the y-direction and the z-direction, wherein the handle and the shaping member are positioned with respect to one another in a non-planar relationship, and wherein the shaping member further comprises cutting elements and the instrument is a box osteotome for resecting at least a portion of a femoral trochanter.
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2. A method of installing a prosthetic stem component, comprising the steps of:
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providing an instrument for operating on a medullary canal for installation of a prosthetic stem component, comprising a handle including a shaft extending downward approximately in a z-direction, a first offset extending from a bottom of the elongated shaft approximately in a y-direction, a second offset extending from the first offset approximately in an x-direction, and a shaping member elongated downward from the second offset approximately in the z-direction, wherein the y-direction is substantially perpendicular to the z-direction, and the x-direction is substantially perpendicular to the y-direction and the z-direction, and wherein the handle and the shaping member are positioned with respect to one another in a non-planar relationship; inserting the instrument into the medullary canal through a surgical incision; positioning the instrument; operating on the medullary canal with the instrument; removing the instrument from the medullary canal; installing the prosthetic stem component in the medullary canal; and completing the surgery. - View Dependent Claims (3, 4, 5, 6, 7)
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Specification