A device for stabilizing a limb, typically when the limb is in a prevention and therapeutic/treatment boot. A wedge-shaped stabilization block includes an outwardly-extending tether. In one form of the invention, a fastener in the form of spaced fastener elements is located on the tether for securing the stabilization block in place. In a second form of the invention, the stabilization block is permanently affixed to the boot and may include fastener elements for engaging complementary fastener elements on the boot.
