Results: when knee joint was bent with angle at 0°、°、90°and the level-central line of X- ray fube slope up and cranialis of °,7°,0° respectively,the kneecap image is single slide and meet the diagnosis need.
Results: when knee joint was bent with angle at 0°、°、90°and the level-central line of X- ray fube slope up and cranialis of °,7°,0° respectively,the kneecap image is single slide and meet the diagnosis need.
果:在屈膝 0°、°、90°时,X线球管水平中心线向上、向头侧分别倾斜°、7°、0°时,髌骨呈单边影像,达到诊断要求。