Patient-modified implant

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.

1 - 20 . (canceled) 
     
     
         21 . A method for manufacturing an orthopedic implant, comprising:
 constructing a computer model of a patient's joint using an image of the patient's joint;   obtaining a digital image of a femoral implant having a non-custom inner bone-engaging surface including a plurality of planar surfaces configured for engagement with standard size femoral bone cuts prepared for a non-custom femoral implant;   modifying the digital image of the femoral implant by configuring an anterior femoral flange of the femoral implant to have at least one of a patient-specific orientation, a patient-specific shape and a patient-specific size to closely match a corresponding joint facing portion of a femur of a specific patient based on the image of the patient's joint; and   manufacturing the femoral implant based on the modifying of the digital image.   
     
     
         22 . The method of  claim 21 , further comprising modifying the digital image of the femoral implant by configuring the anterior flange of the femoral implant to have a patient-specific height that is based on the image of the patient's joint. 
     
     
         23 . The method of  claim 21 , wherein obtaining the digital image of the femoral implant includes creating the digital image. 
     
     
         24 . The method of  claim 21 , wherein obtaining the digital image of the femoral implant includes selecting the femoral implant from a plurality of femoral implants having different non-custom sizes based on a size of the patient's joint. 
     
     
         25 . The method of  claim 21 , further comprising overlaying the digital image of the femoral implant on the image of the patient's joint. 
     
     
         26 . A method for manufacturing an orthopedic implant, comprising:
 constructing a computer model of a patient's joint using an image of the patient's joint;   obtaining a digital image of a femoral implant having a non-custom inner bone-engaging surface including a plurality of planar surfaces configured for engagement with standard size femoral bone cuts prepared for a non-custom femoral implant;   modifying the digital image of the femoral implant by configuring a joint facing feature of the femoral implant to have at least one of a patient-specific shape and a patient-specific size to closely match a corresponding joint facing portion of a femur of a specific patient based on the image of the patient's joint; and   manufacturing the femoral implant based on the modifying of the digital image.   
     
     
         27 . The method of  claim 26 , wherein the joint facing feature comprises an orientation of a patella track of the femoral implant, and wherein the patella track of the femoral implant is modified to be oriented at a patient-specific angle with respect to a medial/lateral centerline of the orthopedic implant based on the image of the patient's joint. 
     
     
         28 . The method of  claim 26 , wherein obtaining the digital image of the femoral implant includes creating the digital image. 
     
     
         29 . The method of  claim 26 , wherein obtaining the digital image of the femoral implant includes selecting the femoral implant from a plurality of femoral implants having different non-custom sizes based on a size of the patient's joint. 
     
     
         30 . The method of  claim 26 , further comprising overlaying the digital image of the femoral implant on the image of the patient's joint obtained. 
     
     
         31 . The method of  claim 26 , wherein the joint facing feature comprises a depth of a patella track of the femoral implant, and wherein the depth of the patella track is configured to be patient-specific to closely match a depth of the corresponding joint facing portion of the femur of the specific patient. 
     
     
         32 . The method of  claim 26 , wherein the joint facing feature comprises an anterior femoral flange of the femoral implant, and wherein the anterior femoral flange is configured to have at least one of a patient-specific orientation, the patient-specific shape and the patient-specific size to closely match at least one of an orientation, a shape and a size of the corresponding joint facing portion of the femur of the specific patient. 
     
     
         33 . The method of  claim 26 , wherein the joint facing feature comprises an anterior femoral flange of the femoral implant, and wherein the anterior femoral flange is configured to have a patient-specific height to closely match a height of the corresponding joint facing portion of the femur of the specific patient. 
     
     
         34 . The method of  claim 26 , wherein the joint facing feature comprises a medial/lateral width of the femoral implant, and wherein the medial/lateral width is configured to be patient-specific in extent to closely match an extent of the corresponding joint facing portion of the femur of the specific patient. 
     
     
         35 . A method for manufacturing an orthopedic implant, comprising:
 constructing a computer model of a patient's joint using an image of the patient's joint;   obtaining a digital image of a tibial tray including a non-custom locking mechanism couplable with a non-custom tibial bearing;   modifying the digital image of the tibial tray by configuring a peripheral surface of the tibial tray to be patient-specific and to closely match a corresponding peripheral surface of a tibia of a specific patient based on the image of the patient's joint; and   manufacturing the tibial tray based on the modifying of the digital image.   
     
     
         36 . The method of  claim 35 , wherein obtaining the digital image of the tibial tray includes creating the digital image. 
     
     
         37 . The method of  claim 35 , wherein obtaining the digital image of the tibial tray includes selecting the tibial tray from a plurality of tibial trays having different non-custom sizes based on a size of the patient's joint. 
     
     
         38 . The method of  claim 35 , further comprising overlaying the digital image of the tibial tray on the image of the patient's joint. 
     
     
         39 . The method of  claim 35 , wherein the non-custom locking mechanism includes a plurality of recesses on the tibial tray. 
     
     
         40 . The method of  claim 35 , further comprising:
 obtaining a digital image of a tibial bearing couplable with the locking mechanism of the tibial tray;   modifying the digital image of the tibial bearing by configuring a peripheral surface of the tibial bearing to be patient-specific and to closely match a corresponding peripheral surface of the tibia of the specific patient based on the image of the patient's joint; and   manufacturing the tibial bearing based on the modifying of the digital image of the tibial bearing.