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Because the center of gravity changes with fluctuation of the crutch, it's difficult to keep balance and it's easy to slip for disabled people while walking. However, this balance crutch has two knightheads; the back one can be rotated. People will hold the handle of the front knighthead and moving forward. Then the center of gravity may be in the front of the knighthead, the back knighthead and the front one will work together orderly because of the elastic device in the junction. This way of walking just like the way of caterpillar crawling, people will walk steady.
Mingming Wang, Kunpeng Wang，Jian Chen，XiuminLin，Hanchao Li，Yang Li，Lingyan Xie，Jingwen Yu，Yuan Gao，Peinv Xu，Yiyun Xu