Ximena and Scarlett Hernandez-Torres were born conjoined at the pelvis, a rare condition that would require careful, complex surgery. 3D Systems helped the girls' surgeons to prepare for the surgery through digital simulation and 3D printed models. Those models enabled the doctors to see complications they hadn't expected, and they were able to complete the surgery in 12 hours rather than the expected 20. Today, the girls are both doing well after being separated. Read more at 3DPrint.com: http://3dprint.com/184495/conjoined-babies-3d-systems/