Social Security's definition of "disability" is: losing at least an arm, a leg, sight in one eye, or any combination of these inability to engage in any gainful employment due to a work-related accident, and that inability must be expected to last for a continuous period of not less than twelve months the inability to engage in one's own occupation for a continuous period of not less than twelve months the inability to engage in any substantial gainful activity by reasons of any medically determinable physical or mental impairment which can be expected to last for a continuous period of not less than twelve months