Methods for patient-specific shoulder arthroplasty
First Claim
1. A method of determining a desired implantation position of a glenoid implant comprising:
- identifying a center point of a glenoid fossa on a virtual model of a patient'"'"'s scapula using software run by a processor, the software identifying the center point using a best fit circle referenced off of three equally spaced points at the glenoid fossa, the three equally spaced points located at three of the following;
an anterior rim, a posterior rim, a superior rim, and an inferior rim, wherein at least the center point is visually displayed on the virtual model and the virtual model is created from an anatomical image of a patient'"'"'s scapula;
determining the desired implantation position of the glenoid implant as a line that passes through both the center point and a medial point of the virtual model of the patient'"'"'s scapula identified using the software; and
selecting an orientation of a virtual alignment pin using the software and visually displaying the orientation of the virtual alignment pin on the virtual model at an angle from the determined desired implantation position;
inserting a surgical alignment pin into the patient'"'"'s scapula, the surgical alignment pin positioned according to an orientation assigned virtually using the software and corresponding to the orientation assigned to the virtual alignment pin.
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Accused Products
Abstract
A method of determining an optimal position of a glenoid implant. The method includes identifying a center point of a patient'"'"'s glenoid fossa based on an image of the patient'"'"'s glenoid fossa; determining the optimal position of the glenoid implant based on the location of the center point relative to a medial point of the patient'"'"'s scapula; and selecting orientation of an alignment pin based on the determined optimal glenoid implant position such that the glenoid fossa will be prepared to receive the glenoid implant at the optimal position when the glenoid fossa is prepared with a cutting device or guide coupled to the alignment pin.
1125 Citations
19 Claims
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1. A method of determining a desired implantation position of a glenoid implant comprising:
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identifying a center point of a glenoid fossa on a virtual model of a patient'"'"'s scapula using software run by a processor, the software identifying the center point using a best fit circle referenced off of three equally spaced points at the glenoid fossa, the three equally spaced points located at three of the following;
an anterior rim, a posterior rim, a superior rim, and an inferior rim, wherein at least the center point is visually displayed on the virtual model and the virtual model is created from an anatomical image of a patient'"'"'s scapula;determining the desired implantation position of the glenoid implant as a line that passes through both the center point and a medial point of the virtual model of the patient'"'"'s scapula identified using the software; and selecting an orientation of a virtual alignment pin using the software and visually displaying the orientation of the virtual alignment pin on the virtual model at an angle from the determined desired implantation position; inserting a surgical alignment pin into the patient'"'"'s scapula, the surgical alignment pin positioned according to an orientation assigned virtually using the software and corresponding to the orientation assigned to the virtual alignment pin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of determining a desired implantation position of a glenoid implant comprising:
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providing software run with a processor to create a virtual three-dimensional model of a scapula created from an anatomical image of patient'"'"'s scapula; identifying a center point of a glenoid fossa on the virtual three-dimensional model using the software, the software identifying the center point using a best fit circle referenced off of three equally spaced points at the glenoid fossa, the three equally spaced points located at three of the following;
an anterior rim, a posterior rim, a superior rim, and an inferior rim, wherein at least the center point is visually displayed on the virtual three-dimensional model;determining the desired implantation position of the glenoid implant as a linear line extending between the center point and a most medical surface of the virtual model of the patent'"'"'s scapula identified using the software, wherein the linear line is visually displayed on the virtual three-dimensional model; and selecting orientation of a virtual alignment pin using the software and visually displaying the orientation of the virtual alignment pin on the virtual three-dimensional model at an angle from the desired implantation position; inserting a surgical alignment pin into the paient'"'"'s scapula, the surgical alignment pin positioned according to an orientation assigned virtually using the software and corresponding to the orientation assigned to the virtual alignment pin. - View Dependent Claims (13, 14)
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15. A method of determining a desired implantation position of a glenoid implant comprising:
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identifying a center point of a glenoid fossa on a virtual three-dimensional model using software run by a processor, the software identifying the center point using a best fit circle referenced off of three equally spaced points at the glenoid fossa, the three equally spaced points located at three of the following;
an anterior rim, a posterior rim, a superior rim, and an inferior rim, wherein at least the center point is visually displayed on the virtual three-dimensional model and the virtual three-dimensional model is created from an anatomical image of a patient'"'"'s scapula;determining the desired implantation position of the glenoid implant as a linear line extending between the center point and a most medial surface of the virtual model of the patient'"'"'s scapula identified using the software, wherein the linear line is visually displayed on the virtual three-dimensional model; selecting an orientation of a virtual alignment pin using the software and visually displaying the orientation of the virtual alignment pin on the virtual three-dimensional model at an angle from the determined desired implantation position; inserting a surgical alignment pin into the patient'"'"'s scapula, the surgical alignment pin positioned according to an orientation assigned virtually using the software and corresponding to the orientation assigned to the virtual alignment pin. - View Dependent Claims (16, 17, 18, 19)
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Specification