In layman's terms, the child's calf rotates inward when walking, making it look like an "O" shape, with the toes facing each other and inward. If you press your child's kneecap, you will find that it goes from the outside up to the inside down. There is a tendency for the lower legs to rotate. One cause of pigeon-toed is genu varum, which means that when the knees of the lower limbs are brought together, the foot joints cannot be brought together. That is what people often call "X" shaped legs. In addition, if the child has flat feet, it is also an important cause of pigeon-toed. Parents should be concerned if their child has flat feet. It is best to undergo corrective treatment before the age of 5. After the age of 5, correction will gradually become more difficult. . The main reason for "eight-shaped feet" is that when children stand up and learn to walk too early, the strength of the legs is weak and it is difficult to maintain body balance. The toes naturally spread to the left and right to expand the area of ??the soles of the feet, increase stability, and prevent falls. Caused by habit formation.