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lumbar-muscule-force
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A Detailed Finite Element Model of the L4-L5 Motion Segmentwhile Considering Trunk Muscle Forces
, M.Sc. Thesis Sharif University of Technology ; Arjmand, Navid (Supervisor) ; Parnianpour, Mohamad (Supervisor)
Abstract
The main task of the spine from the mechanical point of view, withstand external loads and allow the upper body movements. Hence, as the chief cause of back pain are mechanical parameters. Inability to directly measure the forces acting on the spine as in vivo, further brings us to the use of computer models in various branches of orthopedic biomechanics leads.
The purpose of this project in the first place) to make a detailed finite element model of the L4-L5 spinal motion but, in the second place) loads imposed on it except move in a certain physical activities, taking into account the forces acting muscles (calculated by a musculoskeletal model is available) under which they operate,...
The purpose of this project in the first place) to make a detailed finite element model of the L4-L5 spinal motion but, in the second place) loads imposed on it except move in a certain physical activities, taking into account the forces acting muscles (calculated by a musculoskeletal model is available) under which they operate,...
A Detailed Nonlinear Finite Element Model of the L4-L5 Motion Segment to Predcit Spinal Loads during in Vivo Activities
, M.Sc. Thesis Sharif University of Technology ; Arjmand, Navid (Supervisor) ; Parnianpour, Mohammad (Supervisor)
Abstract
Several geometrically-detailed passive finite element (FE) models of the lumbar spine have been developed and validated under in vitro loading conditions. As these models are devoid of muscles, they are either not used to simulate in vivo activities or muscle forces are modeled by a hypothetical compressive follower load (FL). A number of symmetric and asymmetric static tasks were first simulated using a validated musculoskeletal model of the thoracolumbar spine to predict trunk muscle forces. The predicted muscle forces along with the gravity loading were then applied to a passive FE model of the L4-L5 motion segment (developed and validated here) to estimate load sharing among the disc,...
Prediction of Lumbar Muscle Forces Due to Applied Externally Moment and Analaysing Coactivation Between Lumbar Muscles
, M.Sc. Thesis Sharif University of Technology ; Parnianpour, Mohammad (Supervisor) ; Shams Al-Allahi, Mohammad Bagher (Co-Advisor)
Abstract
The role of the lumbar muscles in maintaining posture and balancing externally applied loads has been studied for many years.preliminary studies used electromyograpy (EMG) to establish a relationship between trunk posture and muscle ativity.so developing a better undrestanding of the functional role of those muscles. Determination of lumbar muscle forces, will have an important role in reducing low back pain I future.For this reason,reaserchers have done many studies for understanding the resistence and function on the musulosketal system bye using of various protocls and have utilized of various biomechanical models for determining the effects of applied externally loads on lumbar...