Please meet Madison.
She became crazy after her accident.
She doesn't accept her new body, most of the time she still see her arms and leg and don't understand why she's falling or why she's not able to grap objects..
but sometimes, she sees her stumps and don't understand what they are, so she's always trying to bite them or hurt them against objects, like if her arms or leg would appear by removing the stumps.
That's why she has the straitjacket even if she has no arms, for protecting her stumps from herself. And the leg restraint is for preventing her to try to walk because she's falling everytime, still thinking she has two legs.