Bunions do not usually have a direct effect on the shape of the leg. A bunion is a deformity of the thumb that only affects the appearance of the bunion and causes pain. It does not usually affect the knee and ankle joints, so it does not affect the shape of the leg. If a bunion occurs and the situation is serious, it may cause changes in gait, which may lead to skewing of the force structure of the lower limbs, inflammation of the foot and ankle joints, or even osteomalacia, which may affect the shape of the leg if the situation is serious. If you have a bunion, you should go to the hospital in time to have a checkup, clarify the cause of the problem, and follow the doctor’s instructions to take appropriate treatment measures to avoid other complications.