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目的 验证滑车上孔是否具有人种、性别和侧别差异 ,并探讨滑车上孔的成因。方法 本文观察肱骨 2 88副 (青岛 81,长春 49,通辽 77,广西 81) ,其中男 2 0 1副和女 87副 ;另随机观察青岛地区 10岁～ 80岁 177名健康人 (男 90 ,女 87)双肘正位X线片。结果 ①滑车上孔出现率 :按人计为 15 5 0 %± 1 6 7% (男 11 30 % ,女 2 2 40 % ) ,按侧计为 10 6 0 %± 1 0 1% (男6 70 % ,女 17 2 0 % ) ;骨骼按人计为 19 40 %± 2 33% (男 13 90 % ,女 32 2 0 % ) ,按侧计为 12 80 %± 1 39% (男 8 40 % ,女2 3 0 0 % ) ;X线片按人计为 9 0 0 %± 2 15 % (男 5 6 0 % ,女 12 6 0 % ) ,按侧计为 7 14%± 1 43% (男 2 80 % ,女 11 5 0 % )。以上均具有明显的性别差异 (P <0 0 1) ,骨骼与X线片也存在明显的差异 ;②除长春地区外 ,全部侧别差异不显著 (u =0～ 1 0 2 ) ;③滑车上孔形状 ,以椭圆形最多 (6 1 80 % ) ,肾形次之 (2 0 0 0 % ) ,圆形最少 (18 2 0 % ) ;④滑车上孔孔径 :最大径为 (5 2 5± 0 0 5 ) (1～ 12 80 )mm ,最小径为 (3 72± 0 0 3) (1～ 8 5 )mm。X线片放大率孔径 (10 5 3± 0 76 )mm较骨骼 5 97± 0 46mm为大。结论 滑车上孔的种族差异非常显著 ,黑种人出现率最高 ,白种人最低
Objective To verify whether the hole in the trolley has racial, gender and lateral differences and to explore the cause of the hole in the trolley. Methods Two hundred and eighty humerus patients (81 in Changchun, 49 in Changchun, 77 in Tongliao and 81 in Guangxi) were enrolled in this study. A total of 207 males and 90 females aged 10 to 80 years were randomly observed in Qingdao. Female 87) elbows are X-ray film. Results ① The incidence rate of the upper hole of the trolley was 1550% ± 167% (1130% for men and 2240% for women), and 106% ± 110% (male 6 70% of them and 1720% of women). Bones were 19 40% ± 2 33% (13 90% for males and 32 20% for females), and 12 80% ± 1 39% % Of women and 230% of women); X-ray film was 90% ± 2 15% (56% male and 160% female), 714% ± 1 43% (80% male and 115.0% female). (P <0.01), there was also a significant difference between the bone and the X-ray film; ② except Changchun area, all the side of the difference was not significant (u = 0 ~ 102); ③ pulley (6 1 80%), followed by the kidney (2000%), and the least circular (18 20%). ④ The hole diameter on the pulley: the maximum diameter is (5 2 5 ± 0 0 5) (1 ~ 12 80) mm, the minimum diameter was (3 72 ± 0 0 3) (1 ~ 85) mm. X-ray magnification aperture (1053 ± 076) mm compared with skeletal 597 ± 0 46mm is large. Conclusion The race on the trochlear racial differences is very significant, the highest incidence of blacks, white the lowest