Title: Real-time measure of displacement and intra-stress of lumbar unit during simulating rotation manipulation
Abstract: Objective: To study the displacement and intra-stress distribution of degenerate lumbar disc during rotation manipulation by using 3D finite element system,so as to explore the mechanism of action,safety and rationality of manipulation.Methods: CT images of normal lumbar L4,5 were adopted,and 3D finite element system of lumbar L4,5 was produced by using Mimics software systemy.Based on the principle of manipulation,the lumbar rotation manipulation was decomposed,and many kinds of mechanical parameters were calculated and analyzed using the 3D finite element system.The changes of intra-stress distribution and the displacement of the lumbar disc during simulating manipulation were observed.Results: During the rotation manipulation,the end max-stress distributed in the isthmus,the pedicle of vertebral,and the superior articula facet.The end max-stress of lumbar disc distributed in the anterior-lateral side,and the stress of the right-posterior-lateral side was bigger than that of the opposite side.The max-displacemen was on the top of the superior articular facet.The displacement of the left articular facet was larger than that of the right articular facet,the same to the cervical foraminal area.The right-posterior-lateral disc protruded toward back-inner.Conclusion: It is more rational for rotation manipulation toward the healthy side.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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Cited By Count: 2
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