Essentially these are pathological fractures - fractures that result from trauma that would not normally cause a bone to break. In principle, fractures may occur anywhere. In practice, the three most common types of fracture are:
Fractures can cause pain and in some cases (e.g. hip fractures) severe disability. The chance of a fracture is greatly increased by factors which increase the risk of falling such as visual problems, stroke, dementia, Parkinson's, old age, cardiovascular disease and drugs (e.g. sedatives).