这些病人按照损伤的原因分成三组：疝气、脊椎腔狭窄以及失败手术综合症。

The patients were divided into three groups according to the etiology of the lesion: herniated disc, spinal stenosis, and failed back surgery syndrome.

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这些病人按照损伤的原因分成三组：疝气、脊椎腔狭窄以及失败手术综合症。

The patients were divided into three groups according to the etiology of the lesion: herniated disc, spinal stenosis, and failed back surgery syndrome.

youdao