Finite element analysis of additive manufacturing scoliosis orthosis treatment effect
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    Abstract:

    Objective To evaluate the efficacy of additive manufacturing scoliosis orthosis based on a simulation interaction of bone, trunk and orthosis with finite element method. Methods Combined with the CT data of the patients, the 3D scanning model of the trunk and the full length X-ray of the spine, the finite element model of the bone - trunk - orthosis was established and proved to be effective. The change and development trend of Cobb angle of main thoracic scoliosis were calculated under different boundary and load conditions. Results The treatment effect of the additive manufacturing scoliosis orthosis is good and the improvement of Cobb angle and pelvic tilt are more obvious with the increase of orthotic preload. The Cobb angle is expected to decrease by 6.18° after 6 months of applying a 70N preload to the orthosis. In the case of increasing system stiffness, Cobb angle improvement is not obvious, even worse. Conclusion Additive manufacturing scoliosis orthosis is effective in the treatment of adolescents with immature bones, while which may be less effective in patients with mature or degenerative bones.

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History
  • Received:July 02,2021
  • Revised:August 17,2021
  • Adopted:August 23,2021
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