Valgus knee (Knock knees)
Knock-knees is a condition where the knees angle in and touch one another when the legs are straightened. Females have a wider pelvis than men and a relatively shorter length of the thigh bone, and as a result, have a greater physiological genu valgum than men. Individuals with severe valgus deformities are typically unable to touch their feet together while simultaneously straightening the legs. Mild knock knees can be seen in children from ages 2 to 5, and is often corrected naturally as children grow. However, the condition may continue or worsen with age, particularly when it is the result of a disease, such as rickets or obesity.