髌骨软化症的X线和MR对比研究

Comparative Study Radiography and MRI of the Chondromalacia Patellae

目的：分析髌骨软化症的影像表现,比较X线检查和MRI显示髌骨软化症的敏感度和诊断价值.方法：回顾性分析48例髌骨软化症的影像资料.结果：X线检查改变包括关节面软骨下骨质密度增高5例、骨囊性变11例、关节面毛糙9例、关节间隙变窄6例、关节边缘骨质增生或骨赘43例、髌上囊肿胀2例;MRI显示软骨增厚15例、软骨局限缺损19例、软骨大片缺损14例,软骨关节面下骨髓水肿39例、关节面软骨下小囊性灶20例、关节面毛糙13例、关节积液36例.MRI显示病变的敏感度优于X线检查.结论：MRI能显示X线检查不能显示的软骨和骨髓异常,对病变早期诊断价值很大.MRI对病变的敏感性、特异性方面均优于X线检查.

Objective ：To analyze the imaging of chondromalacia patellae and to compare the sensitvity and diagnostic value of radio- graphy and MRI of chondromalacia patellae. Methods： Retrospective analysis of 48 cases of patients with chondromalacia patellae images performance. Results： The findings of radiography included bone density increased in 5 cases, bone erosions in 11 cases, articular surface unsmoothed in 9 eases, joint space narrowing in 6 cases, bone hyperplasic in 43 cases, suprapatellar bursa swelling in 2 cases ; MRI re- vealed cartilage thicked in 15 cases, cartilage limited defect in 19 cases, cartilage large defect in 14 cases, bone marrow edema in 39cases, bone erosions destruction in 20 cases, articular surface unsmoothed in 13 cases, joints accumulate liquid in 36 cases. MRI showed the sensitivity of the lesion is superior to radiography. Conclusion： MRI can show changes of cartilage and bone marrow that can not be showed by radiography, it has great value for early diagnosis. MRI was superior to radiography to show the sensitivity and specificity of the lesion.