The anthropoid pelvis bears a resemblance to the pelvis of the anthropoid ape. The anthropoid pelvis occurs in 20% to 30% of women and is common in men.
- The anthropoid pelvis is oval-shaped on the inlet, similar to the gynecoid pelvis, but in the anterior-posterior, comparatively in lateral, plane.
- The subpubic arch may be contracted to some extent.
- Rather than anterior that is facing the woman’s back presentation, fetal descent through an anthropoid pelvis is more expectable to be in a posterior that is facing the woman’s front.
- Because of the oval pelvic inlet and long sacrum, the anthropoid pelvis produces a deep pelvis that is wider front to back which is anterior to posterior compared to side to side or transverse.
- Compared to the android or platypelloid shape, vaginal birth is easier with this pelvic shape.
- Because of carrying a lot of adipose tissue and fat in the buttocks as well as in the abdomen, women who have this type of pelvis shape have a tendency to have larger buttocks.
- These women with some effort can have a flat stomach; however, compared to women with the android and platypelloid pelvis types, they may have to decrease body fat levels down slightly lower than average.