Ectropion is the outward deviation of the heel and is one of the common deformities of the foot and is a symptom of cerebral palsy. Ectropion is a deformity caused by an imbalance in the muscle pull of the foot and abnormal development, accompanied by flat feet and navicular collapse. Foot exostosis is usually a clinical manifestation after 4 months of age, when infants and children can fully support their weight.