{
  "url": "https://dantelabs.com/traits/fibular-torsion",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "fibular-torsion",
    "id": "HP:6000921",
    "name": "Fibular torsion",
    "definition": "Excessively rotated (also called torsion) position of the fibula (calf bone). An increased external rotation of the fibula in the incisura tibiofibularis of more than 5 degrees may lead to an increased pressure and will negatively affect the cartilage.",
    "synonyms": [
      "Fibular rotation"
    ],
    "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": "abnormal-fibula-morphology",
        "name": "Abnormality of the calf bone",
        "url": "https://dantelabs.com/traits/abnormal-fibula-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "gdf5",
        "symbol": "GDF5",
        "hgnc": "HGNC:4220",
        "name": "growth differentiation factor 5",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gdf5"
      }
    ]
  }
}