So far we have heard of 3D printing for constructing parts of the body as aids in surgery. They have been used in 2 successful surgeries in toddlers.
One case was the separation of a Siamese twins. The conjoined twins were successfully separated in a 26-hour surgery. They are Hope and Faith (Knatalye Hope Mata and Adeline Faith Mata). Surgery was done at the Texas Children's Hospital.
http://www.medicaldaily.com/pulse/conjoined-twins-separated-doctors-disjoin-major-organs-26-hour-operation-separate-323152
A second case was the re-construction of the face of a toddler named Violet. Violet was born earlier than her twin sister who has a normal face. Violet's eyes are set far apart. She has Tessier facial cleft. The surgery aimed to give her a better face. Surgery was done at the Boston Children's Hospital.
http://www.medicaldaily.com/pulse/girl-tessier-facial-cleft-undergoes-3d-printing-surgery-reconstruct-face-319960
