目的探讨合并椎板骨折的L2-L5爆裂性骨折中硬脊膜撕裂及马尾神经卡压的创伤机制、发生率，以及哪些临床和影像学表现有助于术前判断硬脊膜撕裂和马尾神经卡压。

Objective To analyze the trauma mechanism of the lamina fractures and dural tears and cauda equina entrapment in L2-L5 burst fractures, and to explore the relationship between the two.

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