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Objective: Biomechanical modeling is an important tool in that it can provide estimates of forces that cannot easily be measured (e.g., soft tissue loads). The goal of this study was to develop a discrete element model of the knee that is open source to allow for utilization of modeling by a wider audience of researchers. Methods: A six degree-of-freedom tibiofemoral and one degree-of-freedom patellofemoral...
A three dimensional biomechanical model of the human knee joint was developed. The model was created from MRI scans and includes: bones, menisci, articular cartilage and relevant ligaments (posterior cruciate ligament, lateral collateral ligament and medial collateral ligament). The purpose of this study was to compare the stress distribution on the human knee joint in two situations. The first situation...
The awareness of the spine lumbar kinematics is one of the crucial knowledge to various aspects of clinical application such as diagnosis, treatment and surgical intervention. Continuous evolution of affordable and powerful computers has increased the complexity of the finite element models to assist in understanding the behavior in musculoskeletal systems. Most of the studies carried out under a...
By using CT photographs,this paper will develop the finite element model of C0-C1-C2 with detailed anatomical structure.Through the research on finite element analytical model, material properties,load and boundary conditions,the model will be validated for four kinds of physiological movements - flexion, extension,lateral bending,and axial rotation respectively.This paper will present a calculating...
To establish three dimensional finite element model of the whole cervical spine and investigate biomechanical characteristic of the human cervical spine for application of clinical diagnosis and therapy. Method: A healthy adult female was subjected, three dimensional finite element model of the whole cervical spine was established using the method of 3D interpolation with CT. Result: The model included...
This study reviewed some available FE human neck models developed by some researchers used for human neck injury biomechanics, neck responses and injury predicting. The different ways of anatomical modeling, the material properties and model validation approaches in the models are summarized and compared for better understanding the FE human neck modeling. An advanced FE human neck model developed...
Ligaments in the knee that connect the femur to the tibia are often torn during a sudden twisting motion, which results in instability in the knee. In such cases ligament repair surgery may be an effective treatment where the ligament involved is replaced with a piece of healthy tendon which is grafted into place to hold the knee joint together. A novel device for use in knee ligament repair surgery...
The objective of this study is to develop a detailed three-dimensional geometrically and biomechanically accurate finite element model of the human lower cervical spine (C4-C6), and applied to determination of movement of the mobile type artificial disc replacement Prodisc-C made by Synthes. 3D (FE) model of the multi-level cervical spine was consists of three vertebrae and two intervertebral discs...
Object: To establish a non-linear finite element (FE) model for human L4–L5 lumbar segment and verify its reliability. Method: A FE model of human L4–L5 lumbar segment was established. Some empirical expressions were used to simulate the mechanical properties of vertebral body. The annulus fibrosus and nucleus were assigned hyper-elastic material. The surrounding ligaments were assigned be unsymmetric...
Previous studies have not produced a comprehensive description of the nonlinear hyperelastic stress-strain behavior of the periodontal ligament (PDL) of impacted tooth. In the present study, a simulation was applied to get the stress distribution in the PDL of impacted tooth. Firstly, a novel finite element modeling method for the PDL of impacted tooth based on CT image and reverse engineering was...
The rupture of the medial collateral ligament (MCL) occurs frequently during high valgus impact or sporting activities and commonly results in subsequent injuries. Experimental and clinical studies have been widely performed, but were limited to obtaining stress distribution and conducting parametric studies. The purpose of this study was to develop a validated three-dimensional finite element model...
This paper presents a three-dimensional method to locate the center of resistance (CRE) with a spatial kinematic method and finite element analysis. Firstly, finite element analyses with hypoelastic and also isotropic constitutive model of periodontal ligament were conducted to get the tooth displacements under various boundaries. Then a spatial kinematic method was used to solve the location of CRE...
Dynamic simulation of alveolar bone remodeling is important for orthodontic study and clinical operation, but dynamic simulation based on tissue change has never been realized. Based on a remodeling model obtained from data in literature, using a viscoelastic constitutive model of periodontal ligament obtained by experiment data fitting, the alveolar remodeling progress was simulated with a program...
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