{
  "id": 7089,
  "label": "osteoarthritis, knee",
  "model": {
    "label": "Mondo Disease Ontology (MONDO)",
    "source": 0
  },
  "type_id": 0,
  "reference_id": "MONDO:0005416",
  "properties": {
    "xrefs": [
      "EFO:0004616",
      "MEDGEN:98371",
      "MESH:D020370",
      "UMLS:C0409959"
    ],
    "categories": [
      {
        "ref": "MONDO:0002081",
        "name": "musculoskeletal system disorder"
      }
    ],
    "definition": "Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. (Crenshaw, Campbell's Operative Orthopaedics, 8th ed, p2019)"
  },
  "isLeaf": true,
  "isRoot": false,
  "child_count": 0,
  "parents": [
    {
      "id": 6899,
      "label": "osteoarthritis",
      "isLeaf": false,
      "isRoot": false,
      "parents": [
        7223
      ],
      "type_id": 0,
      "properties": {
        "xrefs": [
          "DOID:8398",
          "HP:0002758",
          "ICD10CM:M15-M19",
          "ICD10CM:M19",
          "ICD9:715.3",
          "MEDGEN:45244",
          "MESH:D010003",
          "NCIT:C3293",
          "SCTID:396275006",
          "UMLS:C0029408",
          "icd11.foundation:558562409"
        ],
        "synonyms": [
          "degenerative joint disease"
        ],
        "categories": [
          {
            "ref": "MONDO:0002081",
            "name": "musculoskeletal system disorder"
          }
        ],
        "definition": "A noninflammatory degenerative joint disease occurring chiefly in older persons, characterized by degeneration of the articular cartilage, hypertrophy of bone at the margins and changes in the synovial membrane. It is accompanied by pain and stiffness, particularly after prolonged activity."
      },
      "child_count": 5,
      "reference_id": "MONDO:0005178"
    }
  ],
  "children": [],
  "roots": [
    {
      "id": 6899,
      "label": "osteoarthritis"
    }
  ]
}