A cast shoe is all you need when dealing with a fractured leg and any other forefoot trauma as it provides solid, stable protection. It is also designed to keep your toes and the dressing clean to speed up post-surgery healing.
Cast boots are mostly designed on a square toe shape to provide comfort and room when healing. The ankle strapping on the edge of the boot ensures precise fit so they don't move once they are fixed. High ankle strapping around the foot maintains its proper position while the rigid lock sole ensures pressure reduction and ambulation.
Cast boots have a universal design fitting either the right or left foot. They also come in multiple sizes to fit any foot size.
Have a look at the wide range of cast boots from USL Medical.