The aim of this study is to reduce the number of X-ray scans taken to detect fractures, by developing a bone fracture screening system. When assessing a bone injury, doctors need to decide whether the injury has resulted in a fracture or a sprain so that they can provide appropriate treatments. The current way to differentiate between these is by an X-ray scan. In 2011, the 46,000 children attending Sheffield Children's Hospital Emergency Department had 10,400 X-rays, mostly to help diagnose bone fractures. Roughly half the X-ray scans taken indicate that the injury is sprain. Unnecessary X-ray scan means raising costs and exposing patients to ionising radiation.