Disability is often described in a way that suggests that it is most often a permanent state. Many concepts and models of disability suggest this. Even when it is described as being socially constructed, the implication is that an impairment leads to a permanent status of disabled within that social, cultural or historical milieu. But there is a lot of evidence that disability is a fluid state. The relationship between impairment physical state and disability is neither fixed nor permanent but is fluid and not easily predicted. This volume revolutionarily reconceptualizes disability not as a static but a dynamic phenomenon