Abstract:

BACKGROUND: Percutaneous vertebroplasty and kyphoplasty are recently developed new minimally invasive surgical techniques in spinal surgery, can enhance the mechanical stability of the vertebra with less complications and satisfactory results by injecting the bone cement into the vertebral body via percutaneous directly or balloon dilatation. However, the research on the biomechanical of spinal also showed some problems after angioplasty.
OBJECTIVE: To explore the effect of the material on percutaneous vertebroplasty and percutaneous kyphoplasty and biomechanical analysis.
METHODS: A computer-based research was performed on CNKI database and PubMed database from January 1999 to August 2012 for the articles on the materials for percutaneous vertebroplasty/percutaneous kyphoplasty and the articles on the biomechanics after treatment. The key words of “percutaneous vertebroplasty, rcutaneous kyphoplasty, polymethyl methacrylate, cement, glass ceramic, biomechanics, biocompatibility, complication” in Chinese and “percutaneous vertebroplasty, percutaneous kyphoplasty, PMMA, cement, biomechanics, Biocompatibility, treatment” in English were put into the title and the abstract. The articles on the materials for percutaneous vertebroplasty/percutaneous kyphoplasty were selected, and for the articles in the same field, those published recently or in the authorized journals were preferred. A total of 132 articles were obtained after initial search, and 19 articles were included for review according the inclusion criteria.
RESULTS AND CONCLUSION: The purpose of the vertebroplasty is to recover the stiffness and compressive strength of the compressed vertebral. Different materials have different impacts on the properties of the vertebral biomechanics. Development of the material can effectively enhance the vertebral compression capability and maintain the good morphological characteristics; it can also recover the vertebral biomechanical properties to the best state.