{
  "url": "https://dantelabs.com/traits/abnormal-tarsal-ossification",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-tarsal-ossification",
    "id": "HP:0008369",
    "name": "Abnormal maturation of ankle bones",
    "label": "Abnormal tarsal ossification",
    "definition": "An abnormality of the formation and mineralization of any of the tarsal bones, seven bones of the foot comprising the calcaneus, talus, cuboid, navicular, and the cuneiform bones.",
    "synonyms": [
      "Hardening of ankle bones",
      "Abnormal ossification of tarsal bones"
    ],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormality-of-the-tarsal-bones",
        "name": "Abnormal ankle bones",
        "url": "https://dantelabs.com/traits/abnormality-of-the-tarsal-bones"
      },
      {
        "slug": "abnormal-foot-bone-ossification",
        "name": "Abnormal foot bone ossification",
        "url": "https://dantelabs.com/traits/abnormal-foot-bone-ossification"
      }
    ],
    "narrower": [
      {
        "slug": "advanced-tarsal-ossification",
        "name": "Accelerated ankle bone maturation",
        "genes": 4,
        "url": "https://dantelabs.com/traits/advanced-tarsal-ossification"
      },
      {
        "slug": "delayed-tarsal-ossification",
        "name": "Delayed ankle bone maturation",
        "genes": 3,
        "url": "https://dantelabs.com/traits/delayed-tarsal-ossification"
      },
      {
        "slug": "irregular-tarsal-ossification",
        "name": "Irregular ankle bone maturation",
        "genes": 1,
        "url": "https://dantelabs.com/traits/irregular-tarsal-ossification"
      },
      {
        "slug": "tarsal-stippling",
        "name": "Tarsal stippling",
        "genes": 1,
        "url": "https://dantelabs.com/traits/tarsal-stippling"
      }
    ],
    "genes": []
  }
}