The Use of 3D Printers in Medical Education with a Focus on Bone Pathology.

The purpose of this study was to determine the feasibility and effectiveness of incorporating three-dimensional (3D)-printed models into pathology lectures. 3D models of an osteochondroma and an osteosarcoma were printed from a digital model and MRI, respectively, using both stereolithographic and fused-deposition modeling printing techniques. First year medical students with no prior instruction on bone tumors were randomized into two groups: a control group with 2D images and an experimental group with 3D models. The students viewed a pre-recorded lecture about bone tumors, supplemented with handling either 2D images or 3D models of an osteochondroma and osteosarcoma. Performance on pre- and post-activity assessments was compared to evaluate educational effectiveness. Printing 3D models of bone tumors was relatively simple and inexpensive. Assessment data showed that although both groups had improved performance and greater confidence post-lecture, those that handled the 3D models had a more favorable experience than those with the 2D images. This study demonstrates 3D-printed models can be incorporated into a pathology lecture and can positively influence teaching-learning outcomes.