成人股骨头缺血坏死的CT研究

CT study of avascular necrosis of femoral head in adults

目的 探讨成人股骨头缺血坏死的早期CT表现和新征象。方法 回顾性阅读具有典型X线和CT表现并经病理或随访证实的 12 7例成人股骨头缺血坏死的CT片 ,分析其征象及变化。结果 CT表现 :股骨头完整组有 90个关节 ,其中单纯高密度硬化 6 7个股骨头 ,伴低密度区者 2 3个股骨头。股骨头塌陷组 111个髋关节 ,其中 2 5个股骨头示单纯高密度硬化 ,86个伴低密度区。 43个股骨头内出现气体。随访病例中 ,股骨头外形和密度也表现出一定规律。结论 股骨头内单纯高密度硬化是本病的早期征象 ,其特殊的形态组合有重要诊断价值。

Objective To study the early and new CT signs of avascular necrosis of femoral head in adults Methods The CT scans of 127 cases with this condition were analyzed Results There were 90 hip joints with femoral head normal in shape, including 67 femoral heads with only high density sclerosis and 23 ones with high density and low density areas In 111 hip joints, the femoral head was depressed and manifested purely high density sclerosis in 25 and mixed density areas in 86 Air filled cysts appeared in 43 femoral heads In follow up cases, the changes in shape and density of femoral head followed some rules Conclusion Purely high density sclerosis is an early sign and is of great diagnostic value combined with its special shape Air in femoral heads is also a sign of the disease