Supernumerary digits located at the ulnar side of the hand (that is, on the side with the fifth finger).
Synonyms:
exact_synonym:
Extra little finger; Extra pinkie finger; Extra pinky finger; Polydactyly affecting the 5th finger; Postaxial polydactyly of fingers; Postaxial polydactyly of hand; Postaxial polydactyly of hands