跛行是一种异常步态，例如一个人走路时看上去只依靠一条腿走路，另一条腿似乎用不上力气，这种情况就是跛行。跛行可能是由疼痛、创伤、骨骼畸形等因素引起的。不过即使没有受伤，也有人可能会跛行，例如罹患败血性关节炎的患者，就有可能走路异常。 [1]
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