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投照方法。被检者患侧在下侧卧摄影台上,膝关节屈曲约呈135°角,对侧下肢置于患肢后方,伸直,患侧足部置于对侧踝部位上方,胶片暗盒放在腓侧,使患侧下肢矢状面与暗盒平行,冠状面与暗盒垂直。胶片中心平腘窝折线,髌骨在胶片内缘2cm内,中心线对准髌骨下缘与腘窝折线中点垂直入射胶片。
Projection method. On the affected side of the subject, the knee flexion was about 135 ° at the lower lateral photographic stage. The contralateral lower limb was placed behind the limb and straightened. The ipsilateral foot was placed over the contralateral ankle and the film cassette was placed over the 腓Side, so that the ipsilateral lower limb sagittal parallel with the cassette, coronal and cassette vertical. Flat center of the film center fold line, the patella within the film within 2cm, the center line at the lower edge of the patella and popliteal fold midpoint vertical incidence of film.