Breastbone

This isometric 3D breastbone icon represents the sternum, a central bone in the human chest. It is useful for anatomy diagrams, medical education, healthcare platforms, biology lessons, and scientific presentations. Free to download, it adds clear visual support to educational and clinical content.

Every Breastbone detail is modelled at the same scale and lit the same way as the rest of Thridy's 3D icons, which is what keeps a set looking deliberate. It is an isometric 3D render, on a transparent background, with no mask to draw.

Used alongside other Health & Fitness icons it holds its weight visually, so a row of them looks composed rather than assembled.

Common homes for it are health dashboards, appointment booking flows, workout trackers and wellness landing pages. Teams in healthtech, telemedicine, gyms and wellness brands tend to use it most. Download it free, or request a custom variation if your project needs a different angle, colour or companion icon.