换一批
换一批摘要目的 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。
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abstractsObjective 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. Burst fractures are defined as injuries of both the anterior and middle
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