Congenital Abnormality
tarsal coalition
Subclass of:
Congenital abnormal Synostosis; Congenital Foot Deformity
Definitions related to tarsal coalition:
  • An inherited condition in which two bones of the foot are fused together; can result in rigid flat feet.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • Congenital, complete or partial fusion of the TARSAL BONES of the foot. PES PLANUS is usually a feature.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (tarsal synostosis) Synostosis (bony fusion) involving one or more bones of the tarsus (calcaneus, talus, cuboid, navicular, cuneiiform bones).
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Tarsal coalition (see the images below) is a condition in which two or more bones in the midfoot or hindfoot are joined. The most common types of coalitions are those between the calcaneus and either the talus or the navicular bones.
    Medscape
    WebMD, 2025
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