System and method to assess mechanical outcomes following joint arthroplasty

A computerized method to assess joint level biomechanics and fixation level biomechanics of joint arthroplasty devices, the method comprising:

• receiving, by at least one computing device, preoperative medical information of a person requiring joint arthroplasty;
• determining, by the at least one computing device as a function of at least some of the preoperative medical information of the person, at least one of bony geometries, insertion, and origin of soft tissues respectively associated with the person;
• accessing, by the at least one computing device, at least one multibody rigid musculoskeletal model configured to determine at least joint level mechanics, including at least one of a bone, an implant, and soft tissue, wherein at least an aspect of the model includes a deformable body;
• accessing, by the at least one computing device, information representing at least a functional activity including at least one of kinematics and ground reaction forces;
• developing, by the at least one computing device using at least some of the preoperative medical information, a finite element model;
• determining, by the at least one computing device as a function of at least one simulation of the multibody rigid musculoskeletal model, at least one of:
• joint kinematics;
• and
• at least one of muscle, ligament, and joint contact forces;
• determining, by the at least one computing device, a response of the deformable body using at least one of the determined the joint kinematics and the at least one of muscle, ligament, and joint contact forces;
• integrating the multibody rigid musculoskeletal model and finite element model, by the at least one computing device applying at least one load calculated with the multibody rigid musculoskeletal model to the finite element model;
• quantifying, by the at least one computing device, the bone at risk of failure as a function of a plurality simulations, including by:
• quantifying, by the at least one computing device, composite micromotion as a largest value of micromotion at each implant interfacial node during each of the plurality of simulations for each of a plurality of implant interfacial nodes;
• and
• quantifying composite risk of bone failure as a largest value of the risk of bone failure at each bone element during each of the plurality of simulations at each bone element;
• assessing, by the at least one computing device, the joint level biomechanics and fixation level biomechanics of joint arthroplasty devices as a function of the multibody rigid musculoskeletal model and the finite element model;
• and
• generating, by the at least one computing device, a pre-surgical plan for the person based on the information derived from the interaction between joint level biomechanics and fixation level biomechanics.