股骨头骺滑脱症的X线诊断,见图6‐1‐13‐1。A ﹒ Trethowan征(= Klein征),正位像表明股骨颈外侧缘的延长线与股骨头关系。B ﹒ Capner征,侧位像表明股骨头后下缘与髋臼下缘的关系。C ﹒干骺端硬化(变白)征,正位像表明股骨近端干骺端部阴影.引自:Klein A, Joplin RJ,Reidy JA,et al ﹒ Roentgenographic features of slipped capital femoral epiphysis ﹒ Am J Roentgenol Radium Ther Nucl Med,1951,66:361‐374。1984,66:1153‐.2 ﹒ Ⅰ度滑脱(轻度滑脱< 30 °,适于作固定)。3 ﹒ Ⅱ度滑脱(中度滑脱,30 °~60 °,适于做转子间外翻截骨术)。向后方倾斜的角度正常值0~10 °。
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