Patient-modified implant
First Claim
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1. An orthopedic implant system comprising:
- a plurality of orthopedic implants comprising;
an inner bone-engaging surface having a length in an anterior-posterior direction that is standardized so as to be independent of an anatomy of a specific patient'"'"'s joint but is rather one of a series of predetermined size increments for the orthopedic implant system with the length in the anterior-posterior direction of each of the plurality of orthopedic implants differing, each size increment varying by a set amount of the length in the anterior-posterior direction relative to others, wherein the inner bone-engaging surface includes a plurality of planar surfaces configured for engagement with bone cuts to a femur, the bone cuts having an overall length when combined in the anterior-posterior direction that is configured to correspond to that of the inner bone-engaging surface of the orthopedic implant; and
at least one of the plurality of orthopedic implants having a joint facing portion opposing the inner bone-engaging surface including at least one feature configured to be patient-specific based on an image of the specific patient'"'"'s joint, wherein the at least one feature is designed using computer modeling to have a shape dependent upon an anatomy of the specific patient.
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Abstract
An orthopedic implant includes a first portion including at least one feature modified to be patient-specific and match the anatomy of a specific patient from a three-dimensional digital image of a patient'"'"'s joint using computer modeling. The orthopedic implant includes a non-custom inner bone-engaging surface including a plurality of planar surfaces configured for engagement with non-custom bone cuts.
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Citations
16 Claims
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1. An orthopedic implant system comprising:
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a plurality of orthopedic implants comprising; an inner bone-engaging surface having a length in an anterior-posterior direction that is standardized so as to be independent of an anatomy of a specific patient'"'"'s joint but is rather one of a series of predetermined size increments for the orthopedic implant system with the length in the anterior-posterior direction of each of the plurality of orthopedic implants differing, each size increment varying by a set amount of the length in the anterior-posterior direction relative to others, wherein the inner bone-engaging surface includes a plurality of planar surfaces configured for engagement with bone cuts to a femur, the bone cuts having an overall length when combined in the anterior-posterior direction that is configured to correspond to that of the inner bone-engaging surface of the orthopedic implant; and at least one of the plurality of orthopedic implants having a joint facing portion opposing the inner bone-engaging surface including at least one feature configured to be patient-specific based on an image of the specific patient'"'"'s joint, wherein the at least one feature is designed using computer modeling to have a shape dependent upon an anatomy of the specific patient. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An orthopedic implant system comprising:
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a plurality of orthopedic implants comprising; an inner bone-engaging surface including a plurality of planar surfaces configured for engagement with corresponding femoral bone cuts, wherein the plurality of orthopedic implants are standardized so as to be independent of the anatomy of a specific patient'"'"'s joint but each of the plurality of orthopedic implants has a different length in an anterior-posterior direction that is one of a series of predetermined size increments for the implant system, wherein each size increment varies by a set amount of length in the anterior-posterior direction relative to others, and wherein selection of which one of the plurality of orthopedic implants is utilized is made by ascertaining a closest fit from the plurality of orthopedic implants by overlaying the plurality of orthopedic implants on an image of the specific patient'"'"'s joint using computer modeling; and at least one of the plurality of implants having a joint facing portion opposing the inner bone-engaging surface configured during a preoperative plan to have a patient-specific feature based on the image of the specific patient'"'"'s joint, wherein the patient-specific feature is designed using computer modeling to have a shape dependent upon the anatomy of the specific patient by modifying a computer model of the one of the plurality of orthopedic implants selected to provide for the patient specific feature, wherein the computer model includes a plurality of planar surfaces corresponding to the plurality of planar surfaces of the inner bone-engaging surface of the one of the plurality of orthopedic implants selected that remain unmodified. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. An orthopedic implant system comprising:
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a plurality of orthopedic implants comprising; an inner bone-engaging surface having a length in an anterior-posterior direction that is standardized so as to be independent of an anatomy of a specific patient'"'"'s joint but is rather one of a series of predetermined size increments for the orthopedic implant system with the length in the anterior-posterior direction of each of the plurality of orthopedic implants differing, each size increment varying by a set amount of the length in the anterior-posterior direction relative to others, wherein the inner bone-engaging surface includes a plurality of planar surfaces configured for engagement with bone cuts, the bone cuts having an overall length when combined in the anterior-posterior direction that is configured to correspond to that of the inner bone-engaging surface of the orthopedic implant; and at least one of the plurality of orthopedic implants having one or more of an orientation of a patella track, a depth of the patella track, a height of an anterior flange, a shape of the anterior flange, and a medial/lateral width that is configured to be patient-specific based on an image of the specific patient'"'"'s joint, wherein the at least one feature is designed using computer modeling to have a shape dependent upon an anatomy of the specific patient.
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Specification