polydactyly of an index finger https://github.com/monarch-initiative/mondo/issues/4948 https://www.malacards.org/card/polydactyly_preaxial_iii UMLS:C1868113 MEDGEN:357422 OMIM:174600 MONDO:0008271 SCTID:723446006 Orphanet:93337 PPD3 polydactyly, preaxial type 3 MESH:C566784 icd11.foundation:982050714 GARD:0002256 Polydactyly of an index finger or PPD3 is a form of preaxial polydactyly of fingers, a limb malformation syndrome, where the thumb is replaced by one or two triphalangeal digits with dermatoglyphic pattern specific of the index finger. Two forms of PPD3 have been characterized: unilateral and bilateral. There have been no further descriptions in the literature since 1962. preaxial polydactyly type 3 preaxial polydactyly of fingers polydactyly-syndactyly-triphalangism