Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 42 1 2010 08 23 onceptual Design of an Apparatus for Tri-axial Measurement of Lumbar Torques in Isometric Mode onceptual Design of an Apparatus for Tri-axial Measurement of Lumbar Torques in Isometric Mode 45 53 78 10.22060/mej.2010.78 FA Mahmoud Reza Azghani Farzam Farahmand Ali Meghdari Faras HakKak Mohammad Parniyanpour Journal Article 2014 03 15 Understanding the role and significance of the different components of the trunk neuro-musculo-skeletal system is of great importance for development of proper preventive and curative measures for low back pain. The experimental investigations, using lumbar moment measurement devices, are considered the most useful sources of information for detail understanding of the biomechanics of trunk and its components. This paper describes the conceptual design of a new lumbar moment measurement system, based on minimum deflection, anthropometric characteristics, and measurement considerations. The system is capable to measure the 3-D trunk moments using uni-directional torque sensors within a proper configuration of links and joints. Some other features of the system include convergence of its joints, high stability, and ability to adapt to a wide range of anatomical postures is standing and sitting positions. Understanding the role and significance of the different components of the trunk neuro-musculo-skeletal system is of great importance for development of proper preventive and curative measures for low back pain. The experimental investigations, using lumbar moment measurement devices, are considered the most useful sources of information for detail understanding of the biomechanics of trunk and its components. This paper describes the conceptual design of a new lumbar moment measurement system, based on minimum deflection, anthropometric characteristics, and measurement considerations. The system is capable to measure the 3-D trunk moments using uni-directional torque sensors within a proper configuration of links and joints. Some other features of the system include convergence of its joints, high stability, and ability to adapt to a wide range of anatomical postures is standing and sitting positions. https://mej.aut.ac.ir/article_78_35f4a8d465e6e1edc05f3d8ab658c551.pdf