During vaginal stimulation, the clitoral crura and shaft are often stimulated due to the clitoris's wishbone-like structure.

“And as you mentioned, when you're stimulating vaginally, you're often, the clitoris is like a wishbone, and it goes around the vagina. And so you're often stimulating the crura is what we call the legs, I guess, for lack of a better term, of the clitoris. And so you're stimulating that. You're also stimulating the clitoral shaft, which goes deep into the pelvis.”