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目的 :探讨成人股骨头缺血性坏死的CT表现特征及诊断价值。方法 :对 18例成人股骨头缺血性坏死的CT表现进行分析。结果 :早期 5例 ,髋关节间隙内侧增宽 ,股骨头稍变形 ,有轻微的散在碎裂。从中央到表面可见点状及小道状骨质增生 ,正常星芒征变形或周围呈丛状及簇状 ,部分相互融合 ;晚期 13例 ,股骨头变形呈园帽状或蕈状 ,病变内发生囊变和碎裂 ,星芒征明显变形或消失 ,骨小梁均失去原有之均匀排列而融合成不规则、不均匀之粗大丛状及簇状 ,或呈不规则之粗大颗粒状。股骨颈缩短、增粗 ,大转子升高 ,沈通氏线不连续 ,髋臼窝宽而浅。髋关节普遍骨质疏松 ,肌肉萎缩。 8例股骨头前方骨皮质骨折不连续。结论 :CT扫描对早期发现病变及了解股骨头缺血性坏死的受累范围及程度具有重要价值 ,对临床制定治疗方案具有积极的指导作用
Objective: To investigate the CT features and diagnostic value of adult avascular necrosis of the femoral head. Methods: The CT findings of 18 cases of adult avascular necrosis of the femoral head were analyzed. Results: In the early stage of 5 cases, the hip joint space widened medially and the femoral head slightly deformed with a slight fragmentation. From the central to the surface can be seen punctate and tract hyperosteogeny, normal star sign deformity or around was plexiform and tufted, partially fused with each other; late 13 cases, femoral head was Park-capped or mushroom-like lesions occur within the lesion Cystic degeneration and fragmentation, star deformity significantly deformed or disappeared, trabecular bone have lost their original uniform arrangement and fusion into irregular, uneven thick tufted and tufted, or irregular coarse particles. Femoral neck shortening, thickening, greater trochanter, Shen Tong’s line is not continuous, wide and shallow acetabulum. Common hip osteoporosis, muscle atrophy. 8 cases of anterior femoral cortical fracture is not continuous. Conclusion: CT scan is of great value in the early detection of lesions and understanding of the extent and extent of avascular necrosis of the femoral head, and has a positive guiding role in the development of clinical treatment plans