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Hangman骨折新型内固定模型的三维有限元分析 被引量:5

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摘要 目的探讨C2椎弓根钉联合Ω形横连内固定治疗Levine-EdwardsⅡ型、ⅡA型Hangman骨折的生物力学特性。方法利用三维有限元建模软件及正常成人上颈椎CT薄层扫描数据建立C2椎弓根钉内固定Levine-EdwardsⅡ型Hangman骨折模型(传统内固定组)及C2椎弓根钉联合Ω形横连内固定Levine-EdwardsⅡ型Hangman骨折模型(新型内固定组),比较分析2组生物力学特性。结果与正常上颈椎模型相比,传统内固定组与新型内固定组上颈椎活动度变化幅度一致。在侧屈、旋转、前屈和后伸方向上,新型内固定组椎弓根钉的最大应力较传统内固定组分别减小7.02%、6.09%、0.32%、0.40%。在前屈、后伸、侧屈方向上,新型内固定组椎弓根钉的轴向拔出力较传统内固定组分别减小27.2%、18.6%、1.1%。结论新型内固定组合对上颈椎活动度的影响同传统内固定相似,但能更有效维持理想骨折复位和骨折端的稳定,是一种治疗Levine-EdwardsⅡ型、ⅡA型Hangman骨折更为理想的内固定组合。
出处 《中国骨与关节损伤杂志》 2019年第11期1150-1152,共3页 Chinese Journal of Bone and Joint Injury
基金 全军医药卫生科研基金(15ZD005)
作者简介 通讯作者:金根洋,E-mail:genyang.101@163.com。
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