Clubfoot is a birth deformity in which an infant's foot is curved towards the body internally, often so severely that the bottom of the foot faces sideways or even upward. The clubfoot can affect one foot or both feet. Clubfoot in both feet is called bilateral clubfoot, and in one foot, it is called unilateral clubfoot. Quick identification and immediate treatment help correct it. The leg affected with clubfoot may be smaller than the normal foot. Normally, half of the affected children have bilateral clubfoot. Some cases can also be associated with other problems too. This condition can be diagnosed at birth or before birth with ultrasound during 18 to 21 weeks of pregnancy. Normally, the males are identified with this condition about twice as frequently as females.