距后三角籽骨撞击综合征影像表现分析

Analysis of image characteristics of Os trigonum syndrome

目的探讨距后三角籽骨撞击综合征的影像表现。方法回顾性分析经临床、影像证实的距后三角籽骨撞击综合征20例患者的影像学表现。结果 X射线、CT检查表现:三角骨籽骨形态方面:三角形10例、圆形6例、椭圆形2例、不规则形2例。密度增高8例,骨质增生12例。MRI检查表现:20例均呈长T1长T2信号改变,T2 WI压脂呈高信号骨髓水肿表现,周围软组织不同程度增厚及局限性积液,距骨后缘囊变8例,呈长T1长T2改变。结论距后三角籽骨撞击综合征有特征性的临床表现,X射线、CT检查可以了解三角骨形态、密度,MRI检查能了解距骨三角籽骨的信号及临近软组织、距骨的情况,影像学和临床相结合能够准确诊断距后三角籽骨撞击综合征,影像学检查能够为临床治疗提供可靠的资料。

Objective To explore the image characteristics of X-ray, CT and MRI of Os trigonum syndrome. Methods The images of 20 patients with Os trigonum syndrome that were confirmed by image and clinical examinations were retrospectively analyzed. Results In the images of X-ray and CT,the morphology of trigonum showed that 10 cases were triangle,6 cases were round,2 cases were oval and 2 cases were irregular. There were 8 cases with increased bone density and. 12 with bone hyperplasia. In the images of MRI,20 cases all showed changes in long T1 and long T2 MRI signals and bone marrow edema of T2 W1 with fat suppression. All cases showed soft tissue incrassation and localized effusion in varying degrees. There were 8 cases with talus posterior osteochondral grind that showed long T1 and long T2 MRI signals. Conclusion Os trigonum syndrome has characteristic clinical manifestations. The examina- tions of X-ray and CT can understand the morphology and bone density. MRI examination can understand the change of signals in Os trigonum, soft tissue, and talus. Combination of imageology and clinical manifestation can diagnose Os trigonum syndrome and imageolo- gy can provide reliable data for clinical treatment.