Kinematic and Parameterized Modeling for Patient-Adapted Implants, Tools, and Surgical Procedures

Abstract

Patient-adapted articular repair systems, including implants, instruments, and surgical plans, and methods of making and using such systems, are disclosed herein. In particular, various embodiments include methods of selecting and/or designing patient-adapted surgical repair systems using parameterized models and/or multibody simulations.

What is claimed is: 
     
         1 . A method of producing a system for treatment of a joint of a patient, the system including an implant and a jig, the method comprising:
 receiving preoperative patient-specific image data of the joint;   performing a first segmentation of at least a portion of the patient-specific image data to create a first model of one or more surfaces of the joint;   creating a corrected model by modifying at least a portion of the first model to account for deformity present in the joint;   performing a shape search of a case database of pre-existing implant designs;   selecting an original implant design from the case database of pre-existing implant designs that is a best fit with the corrected model;   creating a modified implant design by modifying the original implant design to improve fit with the corrected model;   designing a personalized jig based, at least in part, on the first model;   manufacturing the personalized jig;   providing an implant based on the modified implant design; and   packaging the personalized jig with the implant.   
     
     
         2 . The method of  claim 1 , wherein providing includes:
 obtaining an implant having a design corresponding to the original implant design;   altering the implant shape based on the modified implant design.   
     
     
         3 . The method of  claim 2 , wherein altering includes subtracting material from the implant by machining at least a portion of the implant. 
     
     
         4 . The method of  claim 2 , wherein altering includes adding material to the implant utilizing laser sintering. 
     
     
         5 . The method of  claim 1 , further comprising:
 receiving preoperative patient-specific ligament information; and   performing a multibody simulation based, at least in part, on the selected original implant design and the patient-specific ligament information.   
     
     
         6 . The method of  claim 5 , wherein providing includes modifying the modified implant design based on results from the multibody simulation. 
     
     
         7 . The method of  claim 1 , further comprising:
 performing a shape search of a case database of pre-existing second implant component designs;   selecting an original second implant component design from the case database of pre-existing second implant component designs that is a best fit with the corrected model; and   providing a second implant component based on the second implant component design.   
     
     
         8 . The method of  claim 7 , wherein the second implant component is based on the original second implant component design without modification. 
     
     
         9 . The method of  claim 7 , further comprising packaging the second implant component, personalized jig, and the implant together. 
     
     
         10 . The method of  claim 7 , wherein the joint is a knee joint. 
     
     
         11 . The method of  claim 10 , wherein the implant is a femoral implant and the second implant component is a tibial implant. 
     
     
         12 . The method of  claim 10 , wherein the implant is a tibial implant and the second implant component is a femoral implant.