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usually plural ?People who have difficulty walking often use crutches to help them walk. ? I was on crutches [=I was using crutches to walk] for six weeks after I broke my leg words ?Cast: a hard covering that is put on an arm, leg, etc., so that a broken bone can heal ? She has a cast on her arm. — called also plaster cast ?Bandage: a covering (such as a strip of cloth) that protects or supports part of the body that has been hurt ? He wrapped a bandage around his knee. ? She put a bandage on/over the cut. 演講完畢,謝謝觀看!