{
  "url": "https://dantelabs.com/traits/hip-flexion-contracture",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "hip-flexion-contracture",
    "id": "HP:0020025",
    "name": "Hip flexion contracture",
    "definition": "The inability to bring a flexed hip to neutral in the sagittal plane, where the neutral position for the hip is with the thigh segment in line with the anatomic plane of the pelvis, both in the coronal and sagittal planes.",
    "synonyms": [],
    "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": "hip-contracture",
        "name": "Hip contracture",
        "url": "https://dantelabs.com/traits/hip-contracture"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "donson",
        "symbol": "DONSON",
        "hgnc": "HGNC:2993",
        "name": "DNA replication fork stabilization factor DONSON",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/donson"
      },
      {
        "slug": "thoc2",
        "symbol": "THOC2",
        "hgnc": "HGNC:19073",
        "name": "THO complex subunit 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/thoc2"
      },
      {
        "slug": "fem1b",
        "symbol": "FEM1B",
        "hgnc": "HGNC:3649",
        "name": "fem-1 homolog B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fem1b"
      }
    ]
  }
}