3D assessment and simulation of surgical correction of spine deformities by in situ contouring technique

摘要

The simulation by finite element of in situ contouring surgical correction is presented for kyphosis and scoliosis reduction. A personalized finite elements model was obtained based on a 3D stereoradiographic reconstruction. This 3D geometric reconstruction was obtained pre and post operatively in order to assess the surgical correction effect as well as validate the simulation. The specific implants and the specific surgical maneuvers were taken into account in the simulation (bringing plastic material and successive loading and release). A reliable correction was measured in 3D for the kyphosis and scoliosis and the simulation render an account of the correction technique (progressive corrections) and of the reduction effects which were consistent with the post operative 3D geometries.