a protective guard is disclosed that is particularly adapted for use with a bed frame . the guard is adapted to fit over an existing leg of the bed frame and has a specially shaped opening in the upper surface into which the leg of the bed frame can fit . a caster assembly has an upstanding stem that passes the existing leg in the leg structure and holds the protective guard in position affixed to the bed frame . the protective guard is shaped in a variety of configurations and surface markings so as to be adapted to fit the décor of the room in which it is used . in addition , the overall shape of the protective guard covers the leg of the bed frame to provide protection against injury from the inadvertent bumping of the bed frame leg by persons walking or standing near the bed frame . in one embodiment , the protective guard is an integrated shield and a caster assembly that is affixed to the leg of the bed frame and provides a protective plastic covering for the caster assembly as well as the leg .