Objective To improve the level of CT in diagnosing LDH and to provide the proof for selecting method of clinical treatment in lumbar disc herniation (LDH). Methods 218 cases of LDH showed by CT and operative exploration were analysed retrospectively.Results The accurate rats of CT diagnosis of LDH were 95.4%. According to CT findings it may be divided into 5 types: Ⅰ was central type, Ⅱ was postero-lateral type, Ⅲ was forminal type, Ⅳ was extreme lateral type, was nucleus pulposus type. Conclusion CT plays an important role in diagnosis and selecting methods of clinical treatment of LDH; It is signficance to enhance the accurate rats of CT diagnosis and the effect of treatment by distinguish nucleus pulposus and fibrous scar tissue from CT finding of LDH.
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