varus angulation, and the sixth toe has substantial valgus angulation. X-ray of type III central<unk>  (the middle fingers are the same length). Classification is performed by using x-ray imaging to see the bone structures. Ulnar<unk>  Type 1 ulnar<unk>  – an extra digit is attached by skin and nerves. The classification of ulnar<unk>  exists of either two or three types. The two-stage classification, according to Temtamy and McKusick, involves type A and B. In type A there is an extra little finger at the metacarpophalangeal joint, or more proximal including the carpometacarpal joint. The little finger can be hypoplastic or fully developed. Type B varies from a nubbin to an extra, non-functional little finger part on a pedicle. According to the three-type classification, type I includes nubbins or floating little fingers, type II includes duplications at the MCPJ, and type III includes duplications of the entire ray. Radial<unk>  The Wassel classification is the most widely used classification of radial<unk> , based upon the most proximal level of skeletal duplication. The most common type is Wassel 4 (about 50% of such duplications) followed by Wassel 2 (20%) and Wassel 6 (12%). Central<unk>  The classification of central<unk>  is based on the extent of duplication and involves the following three types: Type I is a central duplication, not attached to the adjacent finger by osseous or ligamentous attachments; it frequently does not include bones, joints, cartilage, or tendons. Type IIA is a nonsyndactylous duplication of a digit or part of a digit with normal components, and articulates with a broad or bifid metacarpal or phalanx. Type IIB is a syndactylous duplication of a digit or part of a digit with normal components, and articulates with a broad or bifid metacarpal or phalanx. Type III is a complete digital duplication, which has a well-formed duplicated metacarpal.
Polydactyly
Clinodactyly
Oligodactyly
Syndactyly
Brachydactyly
Sclerodactyly
Pachydermodactyly
Arachnodactyly