preaxial polydactyly of foot, report of a rare case

introduction: polydactyly is the most common congenital anomaly of the forefoot. it can be isolated or associated with established genetic syndromes.case presentation: we presented a rare preaxial (medial) polydactyly of the foot. because our patient reached maturity (24 years old), detailed bony anatomy of the forefoot could be evaluated. radiographic examination showed a widened navicular bone, fusion of the first cuneiform with the first metatarsal, fusion of phalanges of the first ray, articulation of the second cuneiform with the second and third metatarsal, and cuboid with the fourth and the fifth ray. the first ray disarticulation was performed from the naviculocuneiform joint. operation result was excellent according to published protocols.conclusions: according to the watanabe classification, our case was a tarsal medial (preaxial) foot polydactyly.