central polydactyly on human foot toe on white background

additional anomaly background barefoot central close closeup condition cut deformity digits disorder duplicate duplication extra finger fingers foot fungus genetics health hexadactyly human hyperdactyly ism man medical medicine nail nails onychauxis pain polydactyl polydactyly rare separation skin split splittoe supernumerary syndrome thickening toe toenail toes treatment type white yellow