abstract：:Determination of contact areas in diarthrodial joints is necessary for understanding the state of stress within the articular cartilage layers and the supporting bony structures. The present study describes the use of a stereophotogrammetry (SPG) system [Huiskes et al., J. Biomechanics 18, 559-570 (1985) and Ateshian ...

journal_title：Journal of biomechanics

authors： Ateshian GA,Kwak SD,Soslowsky LJ,Mow VC

更新日期：1994-01-01 00:00:00

abstract：:Porcine bioprosthesis were treated with 0.625% glutaraldehyde and stabilized under changing pressure from 4 to 30 mmHg. Bovine pericardium and 12 biovalves (of age between 14 days and 80 months) after implantation in the human body were investigated (7 porcine PB and 5 pericardial bioprosthesis--PCB). Circumferential ...

journal_title：Journal of biomechanics

authors： Purinya B,Kasyanov V,Volkolakov J,Latsis R,Tetere G

更新日期：1994-01-01 00:00:00

abstract：:This study suggests a method that, on the basis of concurrent cinematographic and dynamometric measurements, detects the motion of the visceral part of the body, provided that an estimate of its mass has been given in advance and the periodicity of the system dynamics can be assumed. The mathematical model provides eq...

journal_title：Journal of biomechanics

authors： Minetti AE,Belli G

更新日期：1994-01-01 00:00:00

abstract：:A technique was developed to investigate the condylar displacement of the human temporomandibular joint. Condylar displacement was analyzed from magnetic resonance images of the joint. Fourteen static images were obtained during incremental jaw closure. Landmarks were identified on the magnetic resonance images and re...

journal_title：Journal of biomechanics

authors： Chen J,Buckwalter K

更新日期：1993-12-01 00:00:00

abstract：:Deformation and loading of the knee posterior joint capsule were studied in the cat, in extension rotations and in axial external (ER) and internal (IR) rotations at full extension. Loads were measured in the ligament along the upper edge of the capsule, using mechanically sensitive neurons that were calibrated as loa...

journal_title：Journal of biomechanics

authors： Grigg P,Hoffman AH

更新日期：1993-11-01 00:00:00

abstract：:A mathematical model of synovial film filtration and synovial gel formation at normal approach of cartilage surfaces in the human hip joint is presented. The biphasic mixture model presented in Part I of this paper [Hlavácek, J. Biomechanics 26, (1993)] for synovial fluid and that of Mow and his collaborators [J. Biom...

journal_title：Journal of biomechanics

authors： Hlavácek M

更新日期：1993-10-01 00:00:00

abstract：:Hand-arm vibration (HAV) models serve as an effective tool to assess the vibration characteristics of the hand-tool system and to evaluate the attenuation performance of vibration isolation mechanisms. This paper describes a methodology to identify the parameters of HAV models, whether linear or nonlinear, using mecha...

journal_title：Journal of biomechanics

authors： Rakheja S,Gurram R,Gouw GJ

更新日期：1993-10-01 00:00:00

abstract：:We compare the predictions of the differential equation form of a class of bone-density stress adaptation models with their associated discrete-time computational algorithms. Although our considerations apply to the class of adaptation models based on bulk or apparent bone-density remodeling, we focus attention on a p...

journal_title：Journal of biomechanics

authors： Cowin SC,Arramon YP,Luo GM,Sadegh AM

更新日期：1993-09-01 00:00:00

abstract：:There are many diseases which cause detrimental changes in the trabecular structure of cancellous bone, leading to mechanical failure of the tissue. One approach to understanding the mechanisms of these diseases is to create idealized models that recreate the morphology of the tissue. This paper presents a partial dev...

journal_title：Journal of biomechanics

authors： Fyhrie DP,Fazzalari NL,Goulet R,Goldstein SA

更新日期：1993-08-01 00:00:00

abstract：:A new approach for the assessment of gait patterns is presented. The use of neural network techniques for decision making in gait analysis is for some purposes more effective than biomechanical methods or conventional statistics. To demonstrate this, a neural network was trained to distinguish 'healthy' from 'patholog...

journal_title：Journal of biomechanics

authors： Holzreiter SH,Köhle ME

更新日期：1993-06-01 00:00:00

abstract：:One of the main difficulties encountered in the numerical simulation of the anisotropic elastic characteristics of compact bone is to account for the Haversian microstructure when determining the overall macroscopic behavior. Engineering analyses of such problems are usually based on 'homogenized approximations'. Comp...

journal_title：Journal of biomechanics

authors： Crolet JM,Aoubiza B,Meunier A

更新日期：1993-06-01 00:00:00

abstract：:The purpose of this study was to examine the relationship between internal force production in selected skeletal muscles and the externally calculated joint moment during overground locomotion in the adult cat. Hindlimb segments were modelled as a linked system of rigid bodies and a generalized muscle moment (GMM), th...

journal_title：Journal of biomechanics

authors： Fowler EG,Gregor RJ,Hodgson JA,Roy RR

更新日期：1993-04-01 00:00:00

abstract：:The process of collecting ground reaction force data by mounting a forceplate beneath a treadmill belt has the advantage that numerous walking trials can be analyzed without the problem of subjects 'targeting' their footsteps. However, a potential problem is that the measured forces represent a summation of bilateral ...

journal_title：Journal of biomechanics

authors： Davis BL,Cavanagh PR

更新日期：1993-04-01 00:00:00

abstract：:The purpose of this study was to devise a method for the tensile testing of the organic component of demineralised bone. It was hoped that the method could be applied to determine whether an observed reduction in the strength of bone in copper-deficient rats could be attributed to a reduction in the cross-linking of c...

journal_title：Journal of biomechanics

authors： Jonas J,Burns J,Abel EW,Cresswell MJ,Strain JJ,Paterson CR

更新日期：1993-03-01 00:00:00

abstract：:A model is developed in which osteoblasts can sense the strains applied to a small region of bone through electrical coupling between adjacent cells. The stress-generated potentials within bone are assumed to occur through streaming potentials, and the coupled network of osteocytes is assumed to act in a manner simila...

journal_title：Journal of biomechanics

authors： Harrigan TP,Hamilton JJ

更新日期：1993-02-01 00:00:00

abstract：:The purpose of this investigation was to develop a method to quantify a range of motion of the ankle joint complex (AJC) in vivo. A six-degree-of-freedom apparatus was constructed to measure the unconstrained active range of motion of the AJC. Extensive tests evaluating the accuracy of the fixture and data collection ...

journal_title：Journal of biomechanics

authors： Allinger TL,Engsberg JR

更新日期：1993-01-01 00:00:00

abstract：:Diabetes mellitus, which results from a failure of the endocrine system to control blood glucose levels within normal limits, affects approximately 15% of the population over the age of 65 in developed countries. Between 20-50% of people with diabetes for more than 10 years will experience symmetrical distal sensory n...

journal_title：Journal of biomechanics

authors： Cavanagh PR,Simoneau GG,Ulbrecht JS

更新日期：1993-01-01 00:00:00

abstract：:The process of adaptive bone remodeling can be described mathematically and simulated in a computer model, integrated with the finite element method. In the model discussed here, cortical and trabecular bone are described as continuous materials with variable density. The remodeling rule applied to simulate the remode...

journal_title：Journal of biomechanics

authors： Weinans H,Huiskes R,Grootenboer HJ

更新日期：1992-12-01 00:00:00

abstract：:Hind limb kinematics were recorded in five horses at walk and trot using an opto-electronic CODA-3 system. Simultaneously, in vivo strain in the completely tendinous peroneus tertius muscle was registered by implanted mercury-in-silastic strain gauges. The origin-insertion length patterns of the peroneus tertius were ...

journal_title：Journal of biomechanics

authors： van Weeren PR,Jansen MO,van den Bogert AJ,Barneveld A

更新日期：1992-11-01 00:00:00

abstract：:The equations of motion are formulated for a set of interacting rigid bodies. An explicit formulation could be derived for the total moment of the forces on such a system. This is applied to (1) the intersegmental moment in a multisegment rigid-body model, and (2) the interpretation of the 'centre of pressure' as defi...

journal_title：Journal of biomechanics

authors： Hof AL

更新日期：1992-10-01 00:00:00

abstract：:A more fundamental understanding about the act of manual lifting can be provided by the assessment of the total production of power and the power generated in joints. The present study is concerned with the validity of the estimations of these parameters. Four subjects lifted an 18.8 kg load while they were filmed and...

journal_title：Journal of biomechanics

authors： de Looze MP,Bussmann JB,Kingma I,Toussaint HM

更新日期：1992-09-01 00:00:00

abstract：:This paper is an attempt to systematize and solve the problems connected with biomechanical modelling and mathematical investigation of the upper limb, when all muscles acting on the shoulder, elbow and wrist joint are included. The basic problem is the assumption of a hypothesis for the unit vectors, collinear with m...

journal_title：Journal of biomechanics

authors： Raikova R

更新日期：1992-08-01 00:00:00

abstract：:A finite-element micromechanics model for Haversian cortical bone tissue has been developed and studied. The model is an extension of two-dimensional micromechanics techniques for fiber-reinforced composite materials. Haversian systems, or secondary osteons, are considered to be the fiber component, and interstitial l...

journal_title：Journal of biomechanics

authors： Hogan HA

更新日期：1992-05-01 00:00:00

abstract：:This work describes a dynamic model of the low back that incorporates extensive anatomical detail of the musculo-ligamentous-skeletal system to predict the load time histories of individual tissues. The dynamic reaction moment about L4/L5 was determined during lateral bending from a linked-segment model. This reaction...

journal_title：Journal of biomechanics

authors： McGill SM

更新日期：1992-04-01 00:00:00

abstract：:A structural model was developed to explain sarcomere shortening at the expense of tendon lengthening in the frog semitendinosis (ST) muscle-tendon system. The model was based on the data of Lieber et al. [Am. J. Physiol. 261, C86-C92 (1991)], who determined the relationship between the sarcomere length, tendon load (...

journal_title：Journal of biomechanics

authors： Lieber RL,Brown CG,Trestik CL

更新日期：1992-04-01 00:00:00

abstract：:An asymptotic analysis of a lubrication problem is presented for a model of articular cartilage and synovial fluid under the squeeze-film condition. This model is based upon the following constitutive assumptions: (1) articular cartilage is a linear porous-permeable biphasic material filled with a linearly viscous flu...

journal_title：Journal of biomechanics

authors： Hou JS,Mow VC,Lai WM,Holmes MH

更新日期：1992-03-01 00:00:00

abstract：:To quantify limb dynamics, accurate estimates are needed of anthropometric inertia parameters (mass, center-of-mass location, and moments of inertia). These estimates, however, are not available for human infants; therefore, the movement dynamics of infants have not been studied extensively. Here, regression equations...

journal_title：Journal of biomechanics

authors： Schneider K,Zernicke RF

更新日期：1992-02-01 00:00:00

abstract：:A new technique to study the mechanical properties of collagen lattices or dermal equivalents is described. With the help of the load-extension curve obtained with a uniaxial traction apparatus, a stiffness modulus varying from 0.06 to 1 MPa is calculated from the studied parameters (duration of culture, collagen and ...

journal_title：Journal of biomechanics

authors： Chapuis JF,Agache P

更新日期：1992-01-01 00:00:00

abstract：:The purpose of this study was to validate the mathematical predictions of individual muscle forces obtained using optimization models. Mathematical muscle force predictions were made using linear and nonlinear optimization models proposed in the literature. Actual muscle forces were measured experimentally from soleus...

journal_title：Journal of biomechanics

authors： Herzog W,Leonard TR

更新日期：1991-01-01 00:00:00

abstract：:This paper is concerned with a mathematical model analysis of the patellofemoral joint in the human knee, taking into account the articular surface geometry and mechanical properties of the ligament. It was made by the application of a computer-aided design theory (previously studied) and it was possible to express th...

journal_title：Journal of biomechanics

authors： Hirokawa S

更新日期：1991-01-01 00:00:00

abstract：:We studied the mechanical and anatomical anisotropy of the canine diaphragmatic central tendon (CT). Dumb-bell-shaped strips with effective dimensions of 10 x 2 mm (length x width) were cut from different regions of the canine diaphragmatic CT in two different orientations relative to the direction of neighboring musc...

journal_title：Journal of biomechanics

authors： Chuong CJ,Sacks MS,Johnson RL Jr,Reynolds R

更新日期：1991-01-01 00:00:00

abstract：:Intersegmental forces and moments (i.e. resultant free body forces and moments computed at the joint centers) were studied in canine hindlimbs before and after cemented total hip replacement (THR). Five large, adult, mixed-breed dogs were selected. Their gait was recorded (while leash-walked) before surgery using high...

journal_title：Journal of biomechanics

authors： Dogan S,Manley PA,Vanderby R Jr,Kohles SS,Hartman LM,McBeath AA

更新日期：1991-01-01 00:00:00

abstract：:Formation of restrictive adhesions is one of the main obstacles in rehabilitation following hand surgery. Most experimental work, however, involves only a macroscopic and/or histologic evaluation of the amount of adhesions, and their functional characteristics are poorly described. The aim of this study was to develop...

journal_title：Journal of biomechanics

authors： Hagberg L,Wik O,Gerdin B

更新日期：1991-01-01 00:00:00

abstract：:The six non-interacting modes for stress, strain and energy in an orthotropic elastic model of human femoral cortical bone tissue are discussed and illustrated. The stress and strain modes are illustrated using the representation of the stress and strain fields around a circular hole in a flat plate of cortical bone s...

journal_title：Journal of biomechanics

authors： Cowin SC,Sadegh AM

更新日期：1991-01-01 00:00:00

abstract：:This study is aimed at the analysis of articular contact in a three-dimensional mathematical model of the human knee-joint. In particular the effect of articular contact on the passive motion characteristics is assessed in relation to experimentally obtained joint kinematics. Two basically different mathematical conta...

journal_title：Journal of biomechanics

authors： Blankevoort L,Kuiper JH,Huiskes R,Grootenboer HJ

更新日期：1991-01-01 00:00:00

abstract：:Anesthetized, carefully positioned, female, weanling, white-haired pigs were used to test the hypothesis that (1) interface pressure, the pressure between the skin and an external load, can be used to predict the interstitial fluid pressure over the wings of ilia and the last dorsal spinous process and (2) three-dimen...

journal_title：Journal of biomechanics

authors： Dodd KT,Gross DR

更新日期：1991-01-01 00:00:00

abstract：:More and more powerful calculation methods are being used in the modelization of the human thorax, and considering the progress made in the domain of numerical analysis, this modelization is naturally being oriented toward the utilization of finite element methods. However, thoracic models are usually based on extreme...

journal_title：Journal of biomechanics

authors： Minotti P,Lexcellent C

更新日期：1991-01-01 00:00:00

abstract：:A general theory is described for deriving the mechanical effect of muscles with large attachment sites. In a cadaver experiment the complete attachment sites and bundle distribution of 16 muscles of the shoulder mechanism were recorded. These data were used to calculate the mechanical effect, i.e. the resulting force...

journal_title：Journal of biomechanics

authors： Van der Helm FC,Veenbaas R

更新日期：1991-01-01 00:00:00

abstract：:The effect of tendons viscoelastic stiffness on the dynamic response of the cat's tibialis anterior muscle under isometric conditions was determined. It was shown that the dynamic response model of the muscle derived under sinusoidal contraction-relaxation in the range of 20-80% of its maximal isometric tension was no...

journal_title：Journal of biomechanics

authors： Baratta R,Solomonow M

更新日期：1991-01-01 00:00:00

abstract：:A biomechanical model of the human thorax was constructed to investigate how asymmetric growth of the thorax might initiate spinal lateral curvature and axial rotation as seen in scoliosis deformities. Geometric data specifying nodal points of the model were taken from stereo-radiographs of an adolescent subject. An i...

journal_title：Journal of biomechanics

authors： Stokes IA,Laible JP

更新日期：1990-01-01 00:00:00