- 期刊
- OpenAccess
Ratio-method與Ratio-index:評估頸椎管大小的理想方法
Ratio-Method and Ratio-Index, More Practical Ways to Evaluate Cervical Spinal Canal
摘要
絕對值及其他許多方法均被使用以評估頸椎管。但他們往往失之於不實用，複雜或不準確。我們在此介紹ratio-method與ratio-index。從397例來台大醫院作健康檢查之病人中，我們用頸椎的側面一般攝影分別量取正常值為ratio-method/ratio-index在C3為1.012±0.110/0.905±0122，在C4為0.976±0.070/0.898±0.120，在C5為0952±0.090/0.929±0.126，在C6為0.968±0.107/0.921±0.114，在C7為0965±0.050/0.900±0.103，我們結論在中國人正常值在ratio-method與ratio-index分別為0.95與0.90，如彼等分別少于0.8及0.6時便可能有頸椎管狹窄。
並列摘要
An absolute value and many other calculation have been widely used for evaluation of cervical spinal canals. However, they are either impractical, complicated, or inaccurate. We herein introduce ratio-method and ratio-index, which are more practical and easier to perform. Ratio- method is defined as the ratio of vertebral bodies-spinolaminar line distance to mid-vertebral AP diameter in the same level. Ratio-Index is defined as the ratio of vertebral bodies-pediculolaminar line to mid-vertebral AP diameter in the same level. We reviewed the lateral films of C spines in 397 cases who came for health examinations. The normal values of ratio-method/ratio-index were calculated as 1.012±0.110/0.905±0.122 on C3, 0.976±0.070/0.898±0.120 on C4, 0.982±0.090/ 0.929±0.126 on C5, 0.968±0.107/0.921±0.114 on C6, and 0.965±0.050/0.900±0.103 on C7. We concluded that the normal values of ratio-method and ratio-index in Chinese were 0.95 and 0.90 respectively. Cervical spinal stenosis should be suggested if they were less than 0.8 and 0.6 respectively.