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目的:通过利用核磁共振(MRI)的检查,研究先天性髋脱位(CDH)髋关节病理形态学变化及其临床应用价值。方法:对60例(双髋10例,单侧50例)3岁以下的 CDH 患儿的50个正常髋关节和70个脱位髋关节进行检查,将正常与脱位髋关节病理形态变化的 MRI 表现进行比较研究。结果:发现95%脱位髋关节的骨、软骨、辅助结构及周围软组织均发生12项以上的病理形态学变化。如髂骨及坐骨增厚、髋臼及其软骨变形、关节囊与髂骨粘连和髂腰肌移位等等。同时研究了这些变化所产生的 MRI 特有影像学特征。结论:CDH 头臼脱位所致髋的力学关系发生改变,是产生一系列病理形态学变化的原因。利用 MRI 研究其变化,具有全面和无损伤等优点,在指导临床治疗上有重要应用价值。
Objective: To study the pathological changes of the hip joint of congenital dislocation of the hip (CDH) and its clinical value through the use of magnetic resonance imaging (MRI) examination. Methods: Fifty normal hip joints and 70 dislocated hip joints of 60 children with CDH under 3 years old (10 double hip and 50 unilateral) were examined. MRI findings of pathological changes of hip joint in normal and dislocation were analyzed. Make a comparative study. RESULTS: Twelve or more pathological changes in the bone, cartilage, accessory structures and surrounding soft tissue were found in 95% of dislocated hip joints. Such as iliac and ischial thickening, acetabular and cartilage deformation, joint capsule and iliac adhesion and iliopsoas displacement and so on. At the same time, we studied the MRI-specific features of these changes. CONCLUSIONS: The change of mechanical relationship of the hip caused by dislocation of the head of the CDH is the cause of a series of pathomorphological changes. The use of MRI to study its changes, with comprehensive and non-invasive advantages, in guiding the clinical treatment of important application value.