Hand Deformities, Congenital/diagnostic imaging; Abnormalities, Multiple/classification; Abnormalities, Multiple/diagnostic imaging; Abnormalities, Multiple/genetics; Bone Diseases, Developmental/classification; Bone Diseases, Developmental/diagnostic imaging; Bone Diseases, Developmental/genetics; Chromosome Aberrations; Fingers/abnormalities; Fingers/diagnostic imaging; Foot Deformities, Congenital/classification; Foot Deformities, Congenital/diagnostic imaging; Foot Deformities, Congenital/genetics; Genes, Dominant; Genetic Variation; Hand Deformities, Congenital/classification; Hand Deformities, Congenital/genetics; Humans; Phenotype; Polydactyly/classification; Polydactyly/diagnostic imaging; Polydactyly/genetics; Radiography; Retrospective Studies; Synostosis/classification; Synostosis/diagnostic imaging; Synostosis/genetics; Thumb/abnormalities; Thumb/diagnostic imaging