I have a dachshund and i remember one time she had a cut in her ears but i couldn't understand why she walks as if her would was in her paws. Some people say that dogs do that if they don't feel well or feels pain in any part of the body.
Perhaps she also has a cut in that leg of hers. What happened to her ears? That wound might not be the only one she got. She probably sprained her other leg as well. I hope she's well now though.