To make a shoe you can cut a piece of plastic like a Cool Whip container the size of the foot then wrap in vet wrap or tape to cover the sharp edges then lay the foot on the shoe you just made and use vet wrap to hold it on. making sure to go up around the ankle to keep the duckling from getting it off. Be sure to wrap snugly but make sure it's not too snug and cuts off circulation.
@MeganlovesJesus is it the foot or could it be a slipped tendon you can gently feel down the back of the leg and compare with the normal leg and tell were the tendon is slipped out and move it back .