Device and method for achieving accurate positioning of acetabular cup during total hip replacement
First Claim
1. A method of controlling orientation of an acetabular implant by means of a patient-specific acetabular alignment jig, which allows for creation of a drill hole in the acetabulum, thereby establishing an acetabular axis.
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Accused Products
Abstract
A method and device are provided in order to achieve optimal or desired orientation of an acetabular cup for total hip replacement or hip resurfacing. The method and device utilize preoperative medical imaging such as CT or MRI scans, 3D computer modeling and a patient-specific alignment jig created from medical imaging data such as CT or MRI data and computer 3D modeling. The device allows accurate placement of a drill hole to establish an acetabular axis, and placement of an acetabular cup perpendicular to the axis.
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Citations
10 Claims
- 1. A method of controlling orientation of an acetabular implant by means of a patient-specific acetabular alignment jig, which allows for creation of a drill hole in the acetabulum, thereby establishing an acetabular axis.
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6. A method comprising:
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affixing a patient-specific jig to an outer wall of a patient'"'"'s acetabulum; and drilling an acetabular axis hole in a base of the acetabulum so as to create a desired acetabular axis, in order to achieve accurate inclination and anteversion. - View Dependent Claims (7)
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8. A patient-specific acetabular alignment jig produced by a method comprising:
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obtaining a medical imaging scan of a patient'"'"'s pelvis; mapping computer data from the medical imaging scan with respect to at least one of acetabular depth, diameter, outer wall morphology, inclination, anteversion, and desired acetabular axis; supplying the computer data to three-dimensional computer software; and
utilizing the computer data to create a patient-specific alignment jig using computer-guided machinery. - View Dependent Claims (9, 10)
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Specification