Rainbone Hackathon Project Runs 3D Femur Stress Tests and Has AI Explain the Results

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At Hack the Valley 11, a four-person team built Rainbone, a 3D bone stress-testing prototype that simulates a real femur CT scan using finite-element physics. The tool shows where strain concentrates in the bone and uses Gemini to translate those results into plain language for senior-care staff. It was developed for PointClickCare's Catch It Early challenge and draws on public, de-identified research data from the University of Bologna's HFValid dataset covering 101 women. The creators stress that Rainbone is a research prototype rather than a medical device and does not predict whether or when a fracture will occur. The article's author, a full-stack and AI engineer on the team, describes a design rule in which code performs all calculations and the AI only converts verified results into words.

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