Human Phenotype Ontology identifier HP_0004691 (2-3 toe syndactyly) is syndactyly with fusion of toes two and three. Also known as: 2-3 syndactyly of feet, 2-3 toe soft tissue syndactyly, 2-3 toes syndactyly, Syndactyly of second and third toes, Toe syndactyly, 2-3, Webbed 2nd and 3rd toes, partial or complete syndactyly 2nd-3rd toes.