Prediction of Hip Fracture Risk by Quantitative Ultrasound: Comparison of Three Technologically Different Bone Ultrasound Devices
One of the problems with current DEXA technology for bone density is that it does not adequately evaluate bone quality; just bone density. A bone can be very dense and still fracture–bones’ strength comes from it’s amazing architecture with crosslinks and bridges within the bone as well as the strength of bone’s shell – the cortex. With each step with take, bone actually flexes to some degree. It is bone’s architecture that keeps it from snapping at this point.
Purely cortical increases in bone density would most likely actually increase the risk of fracture because there would be no “give.” Ultrasound will likely give us addtional insight into a bone’s quality once we perfect the technique.