If the fracture is treated conservatively, the patient can eat onions. But if surgical treatment, try not to eat onions in the two weeks before the removal of stitches, at this time to prohibit spicy, stimulating food, as well as seafood, beef, mutton and other hairy things. After the fracture if conservative treatment, there is no special requirements for diet, you can eat a normal diet, onions can also be eaten, but try to focus on light. If the fracture is surgical treatment, before removing the stitches, the incision has not completely healed, you need to pay attention to diet, to light diet. At the same time, avoid spicy, stimulating food, as well as seafood, beef, mutton and other foods, which also includes onions, because onions have spicy, stimulating characteristics.