How can you tell if a hamsters broken its leg?

Your hamster will probably not walk on that leg, perhaps dragging it. Also, I had a hamster that broke her ankle, and she chewed off her foot. I brought her to the vet, and they said that they could try different types of surgeries, but they can't use any anesthesia. I decided that putting her to sleep was the best choice for her, because the surgeries sounded very painful. :( Good luck, and I hope your hamster's leg isn't broken.