Congenital disorder of a limb
Dysmelia (from the Greek dys (δυσ-), "bad" + mélos (μέλος), "limb" + English suffix -ia) is a congenital disorder of a limb resulting from a disturbance in embryonic development.[1]
Types
Dysmelia can refer to [citation needed]
- missing (aplasia) limbs: amelia, oligodactyly, congenital amputation e.g. tibial or radial aplasia
- malformation of limbs: shortening (micromelia, rhizomelia or mesomelia), ectrodactyly, phocomelia, meromelia, syndactyly, brachydactyly, club foot
- extra limbs: polymelia, polydactyly, polysyndactyly
- others: tetraamelia, hemimelia, symbrachydactyly
Occurrence rate
Birth defects involving limbs occur in 0,69 per 1000.[2]
Causes
Dysmelia can be caused by[citation needed]