强直性脊柱炎髋关节病变的影像学对比研究

Comparative Study of X ray Film、CT and Radionuclide Imaging in Hip Joint Lesions of Ankylosing Spondylitis

目的：研究强直性脊柱炎髋关节病变的Ｘ线平片、ＣＴ及核素显像表现及其早期征象。材料与方法：对１０３例强直性脊柱炎累及髋关节的病例进行平片检查，其中２３例做了ＣＴ和核素显像检查，并与平片作对照研究，总结其表现，并对三者的相互关系作统计学分析。对强直性脊柱炎髋关节病变的ＣＴ及核素显像表现进行了分期。结果：髋臼囊变为强直性脊柱炎髋关节病变的早期表现。ＣＴ对囊变的检出率明显高于平片（χ２＝１４．０６，Ｐ＜０．００５）。核素显像表现为髋关节的核素浓聚（ｔ＝８．６３，Ｐ＜０．００１），核素浓聚程度与ＣＴ期次呈正相关。结论：强直性脊柱炎髋关节病变的早期表现为髋臼囊变。

Objective: To study the appearance and early changes of hip joints in ankylosing spondylitis on X ray film, CT and radionuclide imaging.Materials and Methods:The plain X ray films of 103 cases of ankylosing spondylitis involving hip joints were studied, 23 of these patients had been examed with CT and radionuclide imaging. The appearances presented by the 3 methods were concluded and compared. The relationship between them was analysed with statistics. The phases of appearances on CT and radionuclide imaging were classified. Results:The cystic lesions of acetabulum are the early changes of hip joints in ankylosing spondylitis. The detection rate of cystic lesions by CT was much higher than that by X ray plain film (χ 2=14.06,[WT5”BX〗P<0.005)[WT5”BZ〗. The hip joint lesions of ankylosing spondylitis concentrate radionuclides ([WT5”BX〗t=8.63,[WT5”BX〗P<0.001).The degree of nuclide concentration correlates positively with the phases of CT appearance.Conclusion: The early appearances of hip joint disease in ankylosing spondylitis were cystic lesions of actabulum.