The invention relates to an inflatable foot cushion to reduce the force amplifications upon the heel of a foot received therein when the body is in a supine position, comprising: an inflatable main chamber having two inflatable downwardly-sloping sides and a two-sided inflatable foot chamber with each side of the inflatable foot chamber being connected in fluid communication with one of the two downwardly-sloping sides that support with static air pressures the calf, ankle and foot of a body in a supine position, leaving the heel of the foot free of support, when they are positioned within the inflatable main chamber.