Have parents been bothered by their children’s legs not being straight? Is baby’s O-shaped legs X-shaped legs a disease? Do you need treatment? In fact, before the age of 7, the baby O-shaped legs, X-shaped legs is not necessarily a disease, this is a normal physiological phenomenon. The child’s leg development is actually a process: in infancy before the age of one and a half years, the baby legs show about 15 ° turned inward, looks like O-shaped legs; one and a half years of age, the legs gradually rotate outward and straighten, then become a straight leg; 3 to 6 years of age, the legs began to appear the knee outward, it looks like the “X-shaped legs”; by the time you are At the age of 7, it basically has the leg shape of an adult. Most of the “O-legs” and “X-legs” at different stages of a child’s life will correct on their own, and generally do not require special treatment, as long as you pay more attention to observation. If the child has bilateral asymmetrical bending and heavy bending, parents should pay attention to it, because it may be pathological “O-shaped legs” and “X-shaped legs”, we recommend to see a pediatric orthopedic specialist.