Finite Element Analysis Of The Biomechanical Characteristics Of Ankylosing Kyphosis Osteotomy Using The Vertebral Column Decancellation And The Vertebral Column Resection

Objective:this study was to develop an ankylosing kyphosis deformity’s finite element model(FEM)in order to study the relationship between different osteotomy methods and the deformation and stress distribution of the spine.Methods : a three-dimensional FEM of the human body,was created to represent an ankylosing kyphosis man.Biomechanical tests and deformation were performed in the 4 kinds of simulated osteotomy methos,which is the vertebral column decancellation(VCD)osteotomy on T12-L1 spine segments and the vertebral column resection(VCR)on T12-L1 spine segments.Results : The deformation of the osteotomy on T12 segment is significantly larger than the L1.The stess distribution on the VCD osteotomy focus on the Pedicle screw and Titanium bar.The stress concentration location on the VCR is the intervertebral cage.Conclusions:Individualized surgical treatment of ankylosing kyphosis might be infuluenced by the selection of the osteotomy segment and osteotomy operation.the osteotomy segment may affect the stability of the spine,stress distribution of internal fixation likely relate to the method of internal fixation.This conclusions may provide theory evidence to the biomechanical study of analysing ankylosing kyphosis.