摘要
目的 探讨胸腰椎爆裂性骨折的损伤机制。方法 采用脊柱活动节段的三维有限元模型分析了脊柱在直立位、前屈位和后伸位的应力分布情况。结果 椎弓根以及椎体后上方与椎弓根相邻部分为应力集中区域。结论 胸腰椎爆裂性骨折的损伤机制与脊柱的应力集中有关。
OBJECTIVE: To investigate the mechanism associated with thoracolumbar burst fractures. METHODS: Stress distribution of the spine in the upright, flexion and extension positions was analyzed using a three-dimensional finite element model of the spinal motion segment. RESULTS: Stress concentration was noted at the pedicle and posterosuperior part of the vertebral body near the pedicle. CONCLUSION: Stress concentration of the spine may be implicated in the biomechanical mechanism underlying thoracolumbar burst fractures.
基金
supported by the National Natural Science Foundation of China(No3880785)
关键词
胸腰椎爆裂性骨折
损伤机制
脊柱损伤
生物力学
Biomechanics
Imaging, Three-Dimensional
Lumbar Vertebrae
Models, Biological
Research Support, Non-U.S. Gov't
Spinal Fractures
Thoracic Vertebrae
