Ulna

In this collection we present three important long bones of arm – Humerus, Ulna and Radius. The humerus, ulna, and radius are essential bones in the human arm, contributing to both movement and support.

The humerus is the upper arm bone, connecting the shoulder to the elbow, and allows for a wide range of motion. The ulna and radius are the two forearm bones. The ulna is the longer bone on the inner side of the forearm, providing stability and forming the elbow joint, while the radius is located on the outer side, enabling rotation of the forearm and wrist movement. Together, these bones support weight-bearing, facilitate arm mobility, and protect internal structures.

The models were obtained by 3D scaning of humerus, ulna and radius provided by the Institute of Anatomy, Faculty of Medicine, Comenius University Bratislava. They was scanned by three scanners (PhoXi 3D Scanner XS, PhoXi 3D Scanner S, MotionCam 3D Color S) provided by slovak company Photoneo. The bones were scanned from different positions and the final image was combined by using factory software.

The models are very detailed and large, their size is around 50 MB. As they are long bones, we strongly recommend using larger 3D printers. Also, once printed, thanks to their detailed performance, they can be printed and used for the education of Anatomy.