Knocked knees are an angular deformity of the knees, more prevalent in girls than boys. On standing the knees touch but the ankles do not, medically referred to as genu valgum.
During childhood, knocked knees are a part of normal growth and development. Knocked knees become apparent when a child is around 2 to 5 years old and may increase in severity during this time.
If this condition does not appear until a child is 6 years of age or older, an underlying bone disease may be present and needs to be investigated.
This lower limb condition will normally correct itself by the time the child is 7-8 years old. However in some cases this can continue on to adolescence.