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Manufacturing & Biomechanical Analysis of a Human Shoulder Joint: A Methodology Review
Current Issue
Volume 1, 2014
Issue 5 (September)
Pages: 42-47   |   Vol. 1, No. 5, September 2014   |   Follow on         
Paper in PDF Downloads: 46   Since Aug. 28, 2015 Views: 1842   Since Aug. 28, 2015
Rahul Manohar Sherekar, Department of Mechanical Engineering, Jawaharlal Darda Institute of Engineering and Technology, Yavatmal, Pin- 445001, (M. S), India.
Anand Pawar, Department of Mechanical Engineering, Government Polytechnic, Amravati (M. S). India.
Paresh Bheda, Director, Protosys Technologies Pvt.Ltd.Mumbai, 400080, India.
The paper involves building of humerus joint in relatively short time to help create and test various design features, ideas, concepts, functionality and in certain instances customization and performance. Rapid Prototyping technologies perform fabrication of implants in a highly controlled atmosphere which results in especially high purity. The layer-by-layer principle allows the fabrication of customized implants that fully fit patient’s data. The biomechanics is the theory of how tissues, cells, muscles, bones, organs and the motion of them and how their form and function are synchronized by basic mechanical properties. A finite element model of bones with accurate geometry and material properties retrieved from CT/MRI scan data are being widely used to make realistic investigations on the mechanical behaviour of bone structures. In the human body structure the shoulder complex is the functional unit that results in movement of the arm with respect to the trunk. This unit consists of the clavicle, scapula and humerus; the articulations linking them; and the muscles that move them. These structures are so functionally interrelated to one another that studying their individual functions is almost impossible. The present paper focuses on the anatomy, 3D scanning and modelling of humerus, scapula and clavicle. Finite element modelling of the ligaments and the muscles are carried out using the hexa-penta mesh elements in Hyper-Mesh. This meshed model is then analysed for Von Mises stresses for flexion and extension motions at different points using the advance simulation tool for non-linear analysis (LS Dyna). The results of this analysis are helpful for orthopedic surgeons for pre & post operative planning.
3D scanning, CAD modeling, Rapid prototyping, Biomechanics, FEA (Finite Element Analysis)
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