{
  "id": 23557,
  "label": "avascular necrosis of femoral head, primary, 1",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0054550",
  "properties": {
    "xrefs": [
      "GARD:0025946",
      "MEDGEN:1639295",
      "OMIM:608805",
      "UMLS:C4551562"
    ],
    "synonyms": [
      "avascular necrosis of femoral head, primary, 1",
      "avascular necrosis of the femoral head",
      "ANFH1",
      "Femoral head, avascular necrosis of",
      "femoral head, aseptic necrosis of",
      "ischaemic necrosis of femoral head",
      "ischemic necrosis of femoral head",
      "osteonecrosis of femoral head"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      },
      {
        "ref": "MONDO:0002254",
        "name": "syndromic disease"
      },
      {
        "ref": "MONDO:0003900",
        "name": "connective tissue disorder"
      }
    ]
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 13192,
      "label": "familial avascular necrosis of femoral head",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        18458,
        18462
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "GARD:0010914",
          "MEDGEN:909851",
          "MESH:D005271",
          "NANDO:1200373",
          "NCIT:C35480",
          "OMIMPS:608805",
          "Orphanet:86820",
          "SCTID:715657008",
          "UMLS:C4275066",
          "icd11.foundation:1216860745"
        ],
        "synonyms": [
          "aseptic Necrosis of femoral head",
          "aseptic Necrosis of head of femur",
          "familial osteonecrosis of the femoral head",
          "ANFH",
          "ANFH1",
          "avascular NECROSIS of femoral head, primary",
          "avascular NECROSIS of femoral head, primary, 1",
          "avascular Necrosis of femoral head, primary, 1",
          "familial avascular necrosis of the femoral head",
          "femoral head, aseptic Necrosis of",
          "femoral head, avascular Necrosis of",
          "ischaemic Necrosis of femoral head",
          "ischemic Necrosis of femoral head",
          "osteonecrosis of femoral head",
          "primary avascular necrosis of the femoral head"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          }
        ],
        "definition": "Avascular necrosis of femoral head (ANFH) is a severely disabling disease characterized by progressive groin pain, a limping gait, leg length discrepancy, collapse of the subchondral bone, limitation of hip function and eventual degeneration of the hip joint requiring total hip arthroplasty."
      },
      "child_count": 4,
      "reference_id": "MONDO:0012126"
    },
    {
      "id": 29221,
      "label": "dysplasia of the proximal femoral epiphyses",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        20997
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "GARD:0027112",
          "MEDGEN:481394",
          "UMLS:C3279764"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          },
          {
            "ref": "MONDO:0002254",
            "name": "syndromic disease"
          },
          {
            "ref": "MONDO:0003900",
            "name": "connective tissue disorder"
          }
        ],
        "definition": "A developmental disorder affecting the growth and development of the proximal end of the femur (thigh bone) near the hip joint characterized by avascular necrosis of the femoral head, cystic changes of the femoral head, and/or sclerosis of the femoral head. It is a relatively milder form of the other skeletal disorders associated with COL2A1."
      },
      "child_count": 3,
      "reference_id": "MONDO:1030002"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 13192,
      "label": "familial avascular necrosis of femoral head"
    },
    {
      "id": 29221,
      "label": "dysplasia of the proximal femoral epiphyses"
    }
  ]
}