What causes polydactyly?

summary

Polydactyly refers to finger vegetations other than normal fingers, or phalangeal osteophytes of feet, or simple soft tissue components of feet, or foot metacarpal osteophytes, etc. This is the most common type of hand and upper limb congenital malformation, accounting for 39.29% of congenital upper limb malformation, and its incidence rate is about 1%. Polydactyly is clear at a glance. For patients with syndactyly, sometimes the fingers are flat and broad, with only phalangeal bone or metacarpal bone vegetations, which can be diagnosed by X-ray. Let's get to know what causes polydactyly.

What causes polydactyly?

First, there are three types of polydactyly: radial polydactyly (pre axial polydactyly), central polydactyly and ulnar polydactyly (post axial polydactyly). Ulnar polydactyly is the most common, while radial polydactyly belongs to thumb deformity. The ulnar side of the finger is mostly fingered, because the redundant finger contains different tissue components.

Second, ulnar polydactyly can be divided into three types. The first type is soft tissue multi finger, which has no bone, tendon and other tissues. The second is simple multi finger, with bone graft tendon in the middle. The third is compound polydactyly, which not only contains phalangeal tendons and so on, but also includes metacarpal twins.

Third: ulnar polydactyly can be accompanied by a variety of other models, such as syndactyly, three phalanges, thumb, cleft lip, polycystic kidney, anal atresia, tibia loss, dwarfism, bladder valgus, spinal deformity, heart disease, eye loss, Erlong hydrocephalus, chronic nephritis, hypofunction, nail dysplasia, etc.

matters needing attention

The timing of treatment is simple polydactyly, especially ulnar polydactyly. There is no metacarpal bone and metacarpophalangeal joint growth. It is appropriate to complete the correction of polydactyly within 3-6 months. Compound polydactyly should be completed before the age of two, in order to help parents get early psychological comfort, children will not have psychological disorders.