目的:探讨股骨头缺血性坏死的CT表现。方法:利用多层螺旋CT对疑有股骨头坏死的58例进行扫描。结果:52例患者中发现81股骨头出现缺血坏死,坏死股骨头内表现为不规则形状骨密度增高影,骨小梁增粗变形,55个股骨头内出现囊变,24个股骨头碎裂变形,34个股骨头合并关节腔内积液。结论:CT分辨率高,其在诊断股骨头缺血坏死中具有重要价值,比传统X线具有更大的优势。 Objective: To investigate the CT findings of avascular necrosis of the femoral head. Methods: Fifty-eight cases with suspected femoral head necrosis were scanned by multi-slice spiral CT. Results: In 81 patients, ischemic necrosis was found in 81 cases, necrosis of femoral head showed abnormal shadow of increased bone density, thickening of trabecular bone, cystic degeneration in 55 femoral heads and deformity of 24 femoral heads , 34 femoral head joint effusion. Conclusion: The high resolution of CT has important value in diagnosis of avascular necrosis of femoral head and has more advantages than traditional X-ray.