同时探讨病例交叉研究方法在道路交通伤害研究中的适用性。

Meanwhile, the application of case-crossover study in the field of traffic injuries research is also discussed.

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方法采用病例-交叉设计的方法。

Methods The case crossover design was used.

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虽然大部分病例报道的都是使用的交叉韧带替代型假体，但仍然有一些病例使用的铰链式假体。

While most reports describe the use of cruciate-substituting components, there are some reports of the use of hinged prostheses.

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