Broken Femur / Bone Screw Model Prop

thingiverse

This is a 3D model of a femur derived from CT image data of a real femur, acquired from the embodi3D medical image database and uploaded by embodi3D user vishakk. The original CT image files can be found at https://www.embodi3d.com/files/file/29305-femur-ct-scan/. Many thanks are due to embodi3D user vishakk for the CT image data of the femur used to generate this model. A 3D .STL model of the femur was generated using a browser-based democratiz3D conversion program and the CT image data. This .STL file was then opened in Fusion360, where a diagonal break was made in the femur manually using a Cut extrusion. This model also includes three models of a code HA-4 shallow-threaded bone-screw that were made in Fusion360 using parameters provided by ISO standard ISO 5835:1991(en) for a medical bone-screw, linked at https://www.iso.org/obp/ui/#iso:std:iso:5835:ed-1:v1:en. After creating the bone-screws in Fusion360, they were used to create identical holes in the two halves of the femur, allowing easier insertion of the screws into the models. The purpose of this design is to serve as a prop for an undergraduate 3D biofabrication / bioprinting class at the University of New Hampshire at Manchester. The finished print pictured above was printed at 80% scale, so that the models would fit on the printer. This includes the models for the bone-screws, which were also printed at 80% scale.