本文对构成骨盆 X线片的泪痕的结构进行了定位研究。认为构成泪痕下端弧形影者为髋臼切迹前端处柱状骨皮质重迭影 ,泪痕外侧脚为髋臼切迹骨皮质向髋前上棘方向延伸之骨皮质重迭影 (即位于髋臼窝前下方处的骨皮质 ) ;内侧脚者是由构成外侧脚之对应盆面骨皮质重迭影形成。测量了泪痕及泪痕外侧脚与股骨头下端间的髋关节间隙 ,显示该两项均有显著的性别差异 ,男性测得值均高于女性。泪痕的宽与髋臼窝的前下方厚度有关 ,与髋臼窝底的厚度无关 In this paper, the structures of the tear marks that form the pelvic X-ray films were studied. That constitute the arc tear shadow at the bottom of the acetabular notch at the front end of columnar cortical bone overlapping shadow, the outer tear feet acetabular notch cortical bone to the anterior superior spine extending cortical overlap (ie in the acetabulum Below the nest before the cortical bone); medial foot by the composition of the lateral foot of the corresponding pelvic cortex superimposed shadow form. Measurement of the tear and tear lateral femoral head and the femoral head between the lower end of the hip gap, showing that the two have significant gender differences, men measured values ​​were higher than women. The width of the tear is related to the thickness of the anterior and inferior acetabular fossa, regardless of the thickness of the bottom of the acetabulum