Hi @sallyj, That's a good question. I only recently learned about it. A VFA is a Vertibral Fracture Assessment. It's another tool for predicting risk of fracture. Similar to TBS, it's done during the DEXA, and like the DEXA, the cost and the radiation exposure are low. It's used to identify fractures of the spine, past and present. Some can go unnoticed, and the more there are, the higher the risk of future fractures.