Partial/complete duplication of the phalanges of the big toe
Polydactyly affecting the hallux
Preaxial hallucal polydactyly
Preaxial polydactyly of feet
Preaxial polydactyly of foot
Preaxial polydactyly of the feet
Preaxial polydactyly, feet
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This term applies for a wide variety of partial and/or complete duplications of the phalanges of the big toe (sometimes including the 1st metatarsal). A partial duplication can present itself on x-rays as a notched phalanx, bifid phalanx or a broadened phalanx. Polydactyly affecting the big toe is called preaxial or hallucal polydactyly of the feet.