title: Establishment of a three-dimensional finite element model of severe kyphotic deformity secondary to ankylosing spondylitis.
abstract: Objective To establish a three-dimensional (3D) finite element (FE) model of ankylosing spondylitis (AS) kyphosis that is a digital platform for further studies. Methods A 30-year-old man with AS kyphosis underwent computed tomography transverse scanning from T1 to the sacrococcyx. The images were imported into Mimics® 17.0 software to establish a 3D model of the posterior spine, which was then imported into Studio Geomagic 2013 software. Posterior spine convex geometry was established on the 3D geometric model for subsequent optimization of image processing. Unigraphics NX 8.5 produced the spinal kyphosis surface model. Modeled calcification of ligaments and partial resection of useless sacral bone were added. The model was imported into ANSYS 15.0 FE analysis software. Ligaments were added. Parameters were set to generate a 3D FE model of AS. Results and Conclusion A 3D FE model of AS was successfully established, providing a reliable digital platform for subsequent biomechanical analysis.
authors.affiliation: Department of Spine Surgery, The Sixth Affiliated Hospital of Xinjiang Medical University, Xinjiang Urumqi, China.
authors.forename: Aikeremujiang
authors.initials: A
authors.lastname: Muheremu
authors.affiliation: Department of Spine Surgery, The Sixth Affiliated Hospital of Xinjiang Medical University, Xinjiang Urumqi, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Spine Surgery, The Sixth Affiliated Hospital of Xinjiang Medical University, Xinjiang Urumqi, China.
authors.forename: Junyi
authors.initials: J
authors.lastname: Ma
authors.affiliation: Department of Spine Surgery, The Sixth Affiliated Hospital of Xinjiang Medical University, Xinjiang Urumqi, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Department of Spine Surgery, The Sixth Affiliated Hospital of Xinjiang Medical University, Xinjiang Urumqi, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Ma
mesh_terms: D000328:Adult; D002114:Calcinosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D020342:Finite Element Analysis; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional; D007738:Kyphosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D017846:Longitudinal Ligaments / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008297:Male; D008953:Models, Anatomic; D012447:Sacrum / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D012984:Software; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed
keywords: Ankylosing spondylosis; biomechanics; finite element analysis; kyphosis