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RISAn Analytical Technique for Modeling Knee Joint Stiffness—Part I: Ligamentous Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The purpose of this study is to present an analytical technique to evaluate the nonlinear, coupled stiffness characteristics of the human knee joint. In the present work, a model of the knee ...
A Joint Coordinate System for the Clinical Description of Three-Dimensional Motions: Application to the Knee
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The experimental study of joint kinematics in three dimensions requires the description and measurement of six motion components. An important aspect of any method of description is the ease ...
An Analytical Technique for Modeling Knee Joint Stiffness—Part II: Ligamentous Geometric Nonlinearities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An analytical technique previously developed to evaluate the contribution of the ligaments to the nonlinear, coupled stiffness characteristics of the human knee joint [1] is extended here to ...
Sensitivity of Insertion Locations on Length Patterns of Anterior Cruciate Ligament Fibers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A technique is demonstrated, employing an instrumented spatial linkage, for the determination of the length patterns of discrete fiber bundles within a ligament under controlled loading conditions. ...
Contractile Filament Stress in the Left Ventricle and its Relationship to Wall Stress
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A three-dimensional composite model of heart muscle is proposed, consisting of one-dimensional (uniaxial) active contractile filaments embedded in a passive elastic binder. Equations are developed ...
Estimation of Systemic Arterial Impedance in Man From Cardiac Catheterization Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A five-parameter transfer function has been used to characterize the input impedance of the human systemic circulation. Aortic pressure and flow measurements obtained at cardiac catheterization ...
Theoretical Analysis of an Implantable Force Transducer for Tendon and Ligament Structures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A mathematical model was developed for an implantable force transducer to be inserted within the midsubstance of a ligament or tendon. The model was generated by performing both equilibrium and ...
In Vitro Evaluation of an Implantable Force Transducer (IFT) in a Patellar Tendon Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new implantable transducer has been developed for in situ evaluation of ligament and tendon forces. Unlike previous devices, this sensor is placed within the specimen, minimizing measurement ...
Left Ventricular Function: Correlation With Deformation of the Myocardium
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The amount of local tissue deformation at the equatorial region of the left ventricle is quantitated by the ratio of the instantaneous cross-sectional area of a tissue element to the cross-sectional ...
Error Analysis of a System for Measuring Three-Dimensional Joint Motion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the past ten years there has been increased use of six-degree-of-freedom instrumented spatial linkages for the measurement of biological joint motions. In spite of the increased popularity, ...