Term: Sandal, Description: Type of footwear with an open upper, Question: If one of your feet is in a leg cast, should the other be in a sandal?, Answer:No
Fact1: If you are using crutches, it is advised to have non-slip shoes with a closed toe. Fact2: Most sandals do not have non-slip traction and, by definition, don't have closed toes.  Fact3: If you are in a leg cast you are likely to be using crutches. 