Fetal ultrasonography has made women's and men's relationship to the fetus more equal. Drawing on information obtained from multiple conjoint interviews with 62 childbearing couples, I suggest that although women and men are both advantaged by fetal ultrasonography, expectant fathers' experience of the fetus is always enhanced, whereas pregnant women's experience may also be attenuated. For men, fetal ultrasonography is like a prosthetic device: an enabling mechanism that permits them access to a female world from which they have been excluded (...) because of their limited biological role in reproduction. For women, fetal ultrasonography is enabling, but it may also be a disabling mechanism that disrupts their privileged access to the fetus. (shrink)