pubic arch n.
The arch formed by the inferior rami of the pubic bones.
Fracture of the pubic arch, for instance, is described in Abulcasis quite as if he had had definite experience with it.
The greater width of the pubic arch in the female pelvis is seen by comparing its angle with that of the arch in the male pelvis.
Also, the Sacrum is shorter than that of the man, and the pubic arch wider and more rounded than his.
The tubera ischii are pressed together, the pubic arch is thereby contracted, and the sacrum becomes strongly curved forwards.