A Patient-Specific Approach to Assessment of Biomechanical Stability Following Percutaneous Vertebroplasty Using CT Images
In this paper, a biomechanical analysis method for percutaneous vertebroplasty has been presented. Integrating the anatomical structure from the spine CT images of a patient, a novel three-dimensional geometric model of lumbar functional spinal units (FSUs) has been built. Based on the geometric model, two kinds of three-dimensional finite element models (FEM) of L1-L2 segments for preoperative and postoperative vertebrae are created. A numerical calculation method on FEM for biomechanical analysis has been developed, while a boundary condition describing the relative L1-L2 displacement is imposed on the FEM to account for three-dimensional physiological states. The simulating calculation can reveal the stress and strain distribution and deformation of the preoperative and postoperative vertebrae. Our method attempts to provide new biomechanical evidence and a fresh perspective into how the procedure can be implemented more effectively toward the goal of preventing osteoporosis-related fractures. The FEM will provide a promising tool in clinical diagnosis and optimizing individual therapy in osteoporosis-related fractures. It is proved that the method is valid for the consistency of the patients clinical observation after vertebroplasty with the FEM results in our research.
Percutaneous Vertebroplasty Finite element model Geometrical model Intervention surgery
Xiang Chen Haiyun Li Xinjian Yang
Biomedical Engineering Institute, Capital Medical University, 100069 Beijing, China Beijing Neurosurgical Institute, 100069 Beijing, China
国际会议
北京
英文
670-673
2007-05-23（万方平台首次上网日期，不代表论文的发表时间）