An extremely rare case of polydactyly of the toes with synpolydactyly of the fingers. 👐 Polydactyly is a condition where a person is born with extra fingers or toes on one or both of their hands and feet. It is associated with different mutations, either mutations in a gene itself or in a cis-regulatory element responsible for the expression of a specific gene. Synpolydactyly is a joint presentation of syndactyly (fusion of digits) and polydactyly.