What causes a bunion?
You may get bunions if:
- The way your foot is shaped puts too much pressure on your big toe joint. Because bunions can run in families, some experts believe that the inherited shape of the foot makes some people more likely to get them.
- Your foot rolls inward too much when you walk. A moderate amount of inward roll, or pronation, is normal. But damage and injury can happen with too much pronation.
- You have flat feet.
- You often wear shoes that are too tight.
All of these may put pressure on the big toe joint. Over time, the constant pressure forces the big toe out of alignment, bending it toward the other toes.