Inversion of the foot is a congenital foot deformity, which can occur in one or both feet, and is more frequent in boys, mostly due to ankle joint deformity caused by contracture of the posterior tibial muscles. The foot pronation can lead to weakness or loss of extensor muscles, weakness or inability of dorsal foot extension, long-term maintenance of the affected foot in plantar flexion, and contracture of the Achilles tendon or joint deformity leading to ankylosis of the foot, which can lead to paralysis of the lower limb muscles, thinning and softening of the lower limbs in severe children. Therefore, the disease needs to be recognized early and treated actively. First, how to determine whether an infant is clubfoot In general, infant clubfoot can be judged by its symptomatic manifestations as well as relevant clinical examination. If the child has a plantar flexion of the ankle joint, inversion, inversion deformity and abnormal walking posture, such as learning to walk with the forefoot or the lateral edge of the foot on the ground, or in severe cases, walking on the back of the foot, bursa and callus at the weight-bearing area, etc., the initial diagnosis of clubfoot can be made. At this time, parents can take the child to the hospital for the following tests to clarify the diagnosis: 1, physical examination: the front part of the foot can be found inward, inversion, forefoot widening, heel narrowing, high arch, outer ankle protruding in front, inner ankle backward and not obvious; 2, X-ray examination: the talus and the first metatarsal longitudinal axis cross into an angle greater than 15 °, the heel metatarsal surface and the talus longitudinal axis angle is less than 30 °, you can clearly diagnose. Second, the treatment of infant foot entropion Once the diagnosis of foot entropion is clear, in order to avoid its impact on normal growth and development, etc., the relevant treatment and rehabilitation training should be given to correct the foot entropion deformity. If the child should be reset as soon as possible, reset training, wearing orthopedic shoes or plaster fixation under the guidance of a specialist. For those who are not effective in general treatment and manipulation, tendon transfer balancing surgery and Achilles tendon lengthening can be performed. Third, the rehabilitation of infant foot entropion rehabilitation training includes active and passive sports, including active sports is to let the child in the concave surface of the two long triangular planks to walk on their own; or control its squatting position, so that its feet fixed in the abduction, external rotation position, the child’s weight can be suppressed foot entropion; passive sports is to repeatedly move the child from the calf joint to expand the range of motion of the calf joint, but the pulling process can not Passive movement refers to repeatedly moving the child’s talocrural joint to expand the range of motion of the talocrural joint.