A leg support system includes an ankle cradle for preventing or mitigating pressure ulcers on heels of a patient supported on a top surface of a medical support platform. The ankle cradle includes a cradle base, a first ankle support, and a second ankle support. The cradle base has a bottom surface and is sized and dimensioned to be supported on the top surface of the medical support platform, with the bottom surface of the cradle base contacting the top surface of the medical support platform. The first ankle support is coupled to the cradle base. The second ankle support is spaced apart from the first ankle support and couples to the first ankle support or the cradle base.