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在１２４例颅下颌紊乱病患者的颏顶位颅底平片上测量了髁突长轴水平角，以了解Ｘ线片上髁突长轴水平角的人群分布规律，以及与颅下颌关节病变严重程度的关系。本组髁突长轴水平角均值为１５．１４°；左右侧之间、男女之间以及４０岁前与４０岁后的角度均值相比较均无显著性差异（Ｐ＞０．０５）。男性患者右侧关节患骨性病变时的髁突长轴水平角较右侧关节患非骨性病变时为大（Ｐ＜０．０５）。提示髁突长轴水平角的增大可预示病变的严重程度
The horizontal angle of the long axis of the condylar was measured on 124 cases of cranial mandibular disorders and the horizontal distribution of mandibular condylar long axis and the relationship with the severity of cranial mandibular joint disease relationship. The average horizontal axis of condylar long axis was 15.14 °. There was no significant difference (P> 0.05) between left and right sides, between men and women, and before and after 40 years. The horizontal axis of the condylar long axis of the right joint suffered from osteoarthropathy in male patients was greater than that in the non-bone lesions of the right joint (P <0.05). Tip condyle long axis of the horizontal angle can predict the severity of the disease