In most cases, knock knees improve on their own as a child grows, but if the condition continues after the age of 7, the child often wears night braces, according to MedlinePlus. If the condition is severe and the night braces do not work, a doctor may suggest surgery.
Most infants have bowlegs when they are born due to their position in the womb, and the legs typically begin to straighten out when the child starts to walk, usually at about 12 to 18 months, states MedlinePlus. By the age of 3, a child with knock knee is evident, as when the child stands, the knees touch and the ankles part. Causes of this condition include injury to the shin, a bone infection, obesity or rickets, a disease that forms from lack of vitamin D.
There is no way to prevent knock knee, but since most children grow out of it, it's typically not a cause for concern, explains MedlinePlus. In cases where surgery is necessary, outcomes are usually excellent. Without treatment, knock knee can cause difficulty with walking and early arthritis in the knees. Children with knock knee sometimes develop self-esteem issues due to the abnormal appearance of their legs.