Introduction Congenital foot deformity is an abnormality in the shape or structure of the foot. In normal people, the shape of the foot is maintained by relatively proportional external and internal muscles to maintain its balance, and some congenital or disease-related causes can cause foot deformity. Type Congenital toe anomalies: such as multiple toes, syndactyly, megalodon, etc. Congenital foot anomalies: such as clubfoot, ptotic clubfoot, congenital vertical talus, etc. Clinical manifestations: Inversion of the foot: due to paralysis of the long and short fibular muscles, the foot can only bear weight and land on the outside of the foot when walking and standing, and the foot tilts inward, and the Achilles tendon also deviates inward. Horseshoe foot: also known as sagging foot, pointed foot. It is caused by paralysis of the tibialis anterior muscle. When standing, the foot can only land on the forefoot, the ankle joint is excessively plantarflexed, the heel cannot bear weight on the ground, and the Achilles tendon of the affected foot is contracted and shortened. Horseshoe foot and clubfoot are often present together. Ectropion: caused by paralysis of the anterior and posterior tibial muscles, it is the opposite of pronation and can only land and bear weight with the medial side of the foot, and the medial arch is often sunken. Supination foot: also known as heel foot, heel walking foot. Mostly seen in gastrocnemius and flounder muscle paralysis and congenital deformity, standing, walking, weight-bearing with the foot following the ground, toe up, ankle dorsiflexion is obvious. Arch foot: The longitudinal arch of the foot is significantly higher than normal, and the angle of the foot arch is reduced when measured. There is no discomfort. It is caused by an imbalance between the forces on the intrinsic and extrinsic muscles of the foot. Hammer foot: caused by excessive relaxation of the transverse arch of the foot. Flat foot: flat foot refers to the disappearance of the arch of the foot. The arch of the foot is composed of the foot bones, ligaments and muscles, and there are transverse and longitudinal arches when normal. The small bones of the human foot are built up into an arch and become the arch of the foot. When the human body stands, walks and carries weight, the foot is not all weight-bearing, with the metatarsal bone and heel mainly weight-bearing, the arch is often suspended to cushion shock, protect the brain and internal organs, and make people have good bounce. If the structure that forms the arch of the foot is poorly developed or due to various injuries, the arch of the foot disappears and flat feet are formed. Some have a genetic predisposition. Some flat feet are uncomfortable, while others are painful and affect walking. In addition, scar contracture of the foot caused by various traumas can also lead to foot deformation. Congenital clubfoot is a common orthopedic congenital deformity in children, with an incidence of 1/1000, twice as many boys as girls, and slightly more unilateral than bilateral. Its development is related to skeletal, muscular, neurological and genetic factors. After birth, there is a single foot or bipedal horseshoe deformity, i.e., small heel, heel inversion, forefoot inversion, and medial deviation of the toes, in addition to the combined calf internal rotation deformity. With the increase of age, the deformity gradually worsens. Especially after walking under weight, local calluses often appear due to the lateral edge of the dorsum of the foot landing. The congenital clubfoot should be treated early, and in principle, the floppy type is mainly treated conservatively, usually starting one month after birth. The vast majority of pediatric orthopedic surgeons believe that the recurrence rate of deformity correction with conservative treatment is about 40-80%. Although the recurrence rate of deformity with conservative treatment is high, it is an important preparatory procedure before surgery. Preoperative manipulation or phased orthopedic cast fixation under the guidance of a pediatric orthopedic surgeon is essential. Because manipulation or cast can make the contracted tendons, ligaments, joint capsule and other soft tissues of the foot fully stretched, the skin of the posterior medial foot is also fully expanded, reducing the chance of postoperative deformity recurrence and incision skin necrosis and infection; at the same time, it can also reduce the ″rocking chair bottom″ deformity formed by wrong or incorrect manipulation or orthopedic cast fixation, and the treatment of this deformity is more difficult than congenital clubfoot The treatment of this deformity is more difficult than that of congenital clubfoot. Conservative treatment often uses gentle techniques, so that the knee joint flexion, one hand to hold the heel, the other hand to push outward, correct the forefoot inward, and then hold the heel to turn outward, and finally the palm of the hand to hold the plantar dorsal extension, correct the horseshoe, to adhere to several times a day manipulation. One month after birth for plaster therapy, every 1 to 2 weeks to change the plaster, generally need six months to 1 year long, to pay attention to plaster care. If the deformity still does not improve, surgical treatment is performed. After the cast is removed, orthopedic shoes are worn during the day and braces are used for protection at night for 1 to 2 years, and follow-up visits to a pediatric orthopedic surgeon are insisted on until about 2 years after surgery, which is an important guarantee to prevent recurrence of the deformity. If treatment is adhered to, all can get satisfactory results.