Comput Math Methods Med - Recent advances in computational mechanics of the human knee joint.


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Computational mechanics has been advanced in every area of orthopedic biomechanics. The objective of this paper is to provide a general review of the computational models used in the analysis of the mechanical function of the knee joint in different loading and pathological conditions. Major review articles published in related areas are summarized first. The constitutive models for soft tissues of the knee are briefly discussed to facilitate understanding the joint modeling. A detailed review of the tibiofemoral joint models is presented thereafter. The geometry reconstruction procedures as well as some critical issues in finite element modeling are also discussed. Computational modeling can be a reliable and effective method for the study of mechanical behavior of the knee joint, if the model is constructed correctly. Single-phase material models have been used to predict the instantaneous load response for the healthy knees and repaired joints, such as total and partial meniscectomies, ACL and PCL reconstructions, and joint replacements. Recently, poromechanical models accounting for fluid pressurization in soft tissues have been proposed to study the viscoelastic response of the healthy and impaired knee joints. While the constitutive modeling has been considerably advanced at the tissue level, many challenges still exist in applying a good material model to three-dimensional joint simulations. A complete model validation at the joint level seems impossible presently, because only simple data can be obtained experimentally. Therefore, model validation may be concentrated on the constitutive laws using multiple mechanical tests of the tissues. Extensive model verifications at the joint level are still crucial for the accuracy of the modeling.

Resumo Limpo

comput mechan advanc everi area orthoped biomechan object paper provid general review comput model use analysi mechan function knee joint differ load patholog condit major review articl publish relat area summar first constitut model soft tissu knee briefli discuss facilit understand joint model detail review tibiofemor joint model present thereaft geometri reconstruct procedur well critic issu finit element model also discuss comput model can reliabl effect method studi mechan behavior knee joint model construct correct singlephas materi model use predict instantan load respons healthi knee repair joint total partial meniscectomi acl pcl reconstruct joint replac recent poromechan model account fluid pressur soft tissu propos studi viscoelast respons healthi impair knee joint constitut model consider advanc tissu level mani challeng still exist appli good materi model threedimension joint simul complet model valid joint level seem imposs present simpl data can obtain experiment therefor model valid may concentr constitut law use multipl mechan test tissu extens model verif joint level still crucial accuraci model

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