Different anon here talking about the pubic bone: I know there is a lot of variation in pelvis shapes that gets discussed wrt how it can affect childbirth. I think that might also come into play here with the position of the pubic bone. Because similar to the other anon, my pubic bone is definitely not up that high as in the diagrams you linked. It's way down just above the vaginal opening/urethra/hymen area. I can clearly feel bone on either side of my urethra along the top wall of my vaginal opening. Meanwhile my clitoris is 6-7cm away in a whole different post code.
so i went down a lil rabbithole of trying to figure this out, because i do not really know much about bones, & honestly what you are describing sounds rlly familiar. ive also felt a rlly rlly solid structure at the top wall of my vaginal opening, which i thought initially was bone but then figured it couldn't be, since everything ive seen on models of pubic bones is such that for there to be bone above the vagina would like. really difficult?
the closest thing ive found is the urethral sponge, which is apparently synonymous w the paraurethral gland/"""female""" prostate (? i did not know this). its in the right place:
but everything on it only talks abt it being pleasurable & not. the very rigid portion of the top of the vaginal opening? so honestly i have no idea! i am quite confused. do most people not have a firm part at the beginning of their vagina, on the top of the canal?
i did find this paper (link) on congenital variations in the pelvic bone, which listed these: "Pelvic congenital malformations can be both generalized and isolated. Generalized congenital malformations of the pelvic bones lead to a change in the configuration of the whole pelvis, and isolated – involve one bone or part of it. Generalized pelvic congenital malformations include the anatomically narrow pelvis, hypoplastic pelvis, infantile pelvis, uniformly narrowed pelvis, oblique pelvis, funnel-shaped pelvis, flat pelvis, flat narrowed pelvis, transversely narrowed pelvis, scoliotic pelvis, spondylosis. Isolated pelvic bone defects include pubic bone aplasia, hip aplasia, achondrogenesis, achondroplasia, hip hypoplasia, deep acetabulum, hip dysplasia, cleidocranial dysplasia, limbus, neolimbus, retroversion of the acetabulum, and stenosis of the acetabulum."
but i dont know enough about pelvises to understand all of this. would love to hear from others!
