The condition is known under numerous names. The most commonly used name is clubbed thumb, or club thumb. American researcher R.A. Hefner used the terms "short thumb" and "brachymegalodactylism" in 1924, and "short thumb" has continued to be used in a few other studies since then, including the study that defined Rubinstein–Taybi syndrome in 1963. "Stub thumb" is the common term preferred by the online database Online Mendelian Inheritance in Man and was first used in a 1965 study. Stub thumbs have also been called murderer's thumb (allegedly among fortune tellers), bohemian thumb, toe thumb, and potter's thumb. The term "clubbed thumb" should not be confused with nail clubbing, which is a clinical sign associated with a number of diseases.
Brachydactyly type D
Cenani–Lenz syndactylism
Congenital contractural arachnodactyly
Ectrodactyly
Synpolydactyly
Camptodactyly
Acrocephalosyndactylia
Congenital clasped thumb