Do Women Have An Extra Rib. Each human has the same 12 pairs of ribs, although an occasional exception does have one or two extra ribs. You can have a cervical rib on the right, left, or on both sides.
A cervical rib is an abnormality that's present from birth. The same source stated that these ribs are twice as common in females and that the incidence in the normal population is 0.5 percent; In the early stages, this is a normal condition.
