It may seem a bit like sci-fi—or Frankenstein—that you could be able to print replacement body parts like hands or even organs using a 3D printer. However, ongoing work in this field is making this a reality in some areas of medicine, and closer and closer to a possibility in others. At Stanford MedicineX in 2014, I saw kids who benefitted from Enabling the Future’s 3D printed prosthetic hands, and at MedicineX 2017, I watched as my friend Joe, a paramedic, practiced intubation on a 3D printed model, commenting on the benefits of this tool for medical and other students, such as those training to be EMTs. 3D printing has always been about innovation—but now, we are seeing it applied in ways that truly could be the d