Patient-adapted and improved orthopedic implants, designs and related tools
First Claim
1. A method of selecting and/or designing a patient-matched articular implant having an outer articular surface and an inner bone-facing surface, the method comprising the steps of(a) preoperatively identifying from patient-specific data of the patient'"'"'s joint a curvature on an articular surface of the patient'"'"'s joint;
- (b) selecting for the articular implant'"'"'s outer articular surface a curvature that substantially matches the curvature identified in step (a), or a predetermined percentage thereof;
(c) selecting a desired minimum thickness for the articular implant;
(d) selecting and/or designing one or more surface facets on the inner, bone-facing surface of the articular implant that provide at least the desired minimum thickness selected in step (c) between the one or more surface facets and the articular surface curvature selected in step (b).
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Accused Products
Abstract
Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient'"'"'s joint. The data can be used to create a model for analyzing a patient'"'"'s joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.
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Citations
18 Claims
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1. A method of selecting and/or designing a patient-matched articular implant having an outer articular surface and an inner bone-facing surface, the method comprising the steps of
(a) preoperatively identifying from patient-specific data of the patient'"'"'s joint a curvature on an articular surface of the patient'"'"'s joint; -
(b) selecting for the articular implant'"'"'s outer articular surface a curvature that substantially matches the curvature identified in step (a), or a predetermined percentage thereof; (c) selecting a desired minimum thickness for the articular implant; (d) selecting and/or designing one or more surface facets on the inner, bone-facing surface of the articular implant that provide at least the desired minimum thickness selected in step (c) between the one or more surface facets and the articular surface curvature selected in step (b). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for making an implant for repairing a joint of a patient that meets a minimal thickness threshold, the method comprising the steps of:
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(a) identifying a desired minimal thickness threshold for the implant; (b) deriving from patient-specific data regarding the joint of the patient a substantially coronal curvature or substantially sagittal curvature for the articular surface of the implant; and (c) modifying the coronal or sagittal curvature in order for the implant to be within the minimal thickness threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for making an implant for repairing a joint of a patient that meets a maximum thickness threshold, the method comprising the steps of:
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(a) identifying a desired maximum thickness threshold for the implant; (b) deriving from patient-specific data regarding the joint of the patient a coronal or sagittal curvature for a condylar articular surface of the implant; and (c) modifying the coronal or sagittal curvature in order for the implant to be within the maximum thickness threshold. - View Dependent Claims (17, 18)
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Specification