The usage of percutaneous transpedicular osteosynthesis with kyphoplasty based on a finite-element experimental model of a spine fragment

Abstract

Objective Improve outcomes in patients treated for thoracolumbar spine injury based on updated methodological approaches to treatment tactics and analysis of stress-strain state (SSS) produced in a spinal fragment. Develop a technique for combined usage of percutaneous transpedicular spondylodesis and kyphoplasty for operative treatment of compression comminuted thoracolumbar spine injury being committed to minimally invasive technology. Material and methods Finite-element modeling (FEM) was performed to study SSS in an intact spinal motion segment with transpedicular stabilization in case of a traumatic injury to one vertebral body and also with combined application of transpedicular osteosynthesis and vertebroplasty in different loading regimes. Results Combined application of vertebroplasty and transpedicular fixation with metal systems has shown high efficacy with considerably decreased stress in intact vertebrae and decreased stress in the implanted metal construct. Conclusions The findings allowed for a new surgical technique developed by a concept of minimally invasive technology that is illustrated with a successful clinical instance.