作者从旧金山加州大学颞颌关节门诊收藏的1965～1977年头颅X 线体层片中,随机抽出100例患者的照片进行有关颞颌关节的测量和分析。在颏顶位片上测量髁突内外极的宽度及髁突与水平面所呈的角度;在侧面 From the University of California, San Francisco temporomandibular joint clinic collection 1965 ~ 1977 cranial X-ray slice, 100 patients were randomly selected photos of the temporomandibular joint measurements and analysis. The width of the condyle's inner and outer poles and the angle between the condyle and the horizontal plane were measured on the top of the chin;