{
  "abstract": "Background\n\nTalonavicular coalition is a rare type of tarsal coalition that may lead to painful flatfoot and progressive functional impairment. Conventional talonavicular arthrodesis provides symptom relief but sacrifices joint motion. Motion-preserving reconstruction strategies remain largely unexplored.Case presentation\n\nWe report a case of congenital talonavicular coalition accompanied by flatfoot treated with individualized 3D-printed talonavicular joint replacement (TNJR) in a 12-year-old patient. At 24-month follow-up, the patient achieved complete pain relief (VAS 0) and significant functional improvement (AOFAS 98). Talonavicular joint motion was preserved with 15° inversion/eversion and 15° pronation/supination. Radiographic evaluation demonstrated restoration of the medial longitudinal arch and correction of hindfoot valgus. Progressive improvement was observed in the calcaneal pitch, talonavicular coverage, and hindfoot alignment angles, whereas Meary's angle showed a slight increase.Conclusion\n\nThis case demonstrates the feasibility of individualized 3D-printed TNJR as a potential motion-preserving option for selected patients with extensive congenital talonavicular coalition.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Orthopedics, The First Hospital of Hebei Medical University, Shijiazhuang, China.",
    "Department of Foot and Ankle Surgery, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.",
    "Hebei Medical University, Shijiazhuang, China."
  ],
  "article_type": "case report",
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Guimiao Li"
    },
    {
      "affs": [
        1
      ],
      "name": "Shixin Liu"
    },
    {
      "affs": [
        2
      ],
      "name": "Chenchen Yuan"
    },
    {
      "affs": [
        0
      ],
      "name": "Leilei Zhao"
    },
    {
      "affs": [
        0
      ],
      "name": "Hecheng Zhou"
    },
    {
      "affs": [
        0
      ],
      "name": "Dehua Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Dehang Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Gang Ji"
    },
    {
      "affs": [
        0
      ],
      "name": "Guobin Liu"
    },
    {
      "affs": [
        1
      ],
      "name": "Zhenhui Sun"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ceb0htxpfk0dq.bib",
  "cited_by": 0,
  "doi": "10.3389/fsurg.2026.1865047",
  "fulltext_url": "https://europepmc.org/articles/PMC13710302",
  "id": "ceb0htxpfk0dq",
  "issns": [
    "2296-875X"
  ],
  "landing_url": "https://europepmc.org/article/MED/42948032",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Case Report"
    ],
    [
      "openalex",
      "2732|Foot and Ankle Surgery"
    ]
  ],
  "openalex": "W7221695207",
  "pdf_url": "https://europepmc.org/articles/PMC13710302?pdf=render",
  "pmcid": "PMC13710302",
  "pmid": "42948032",
  "published": "2026-10-13",
  "publisher": "Frontiers Media SA",
  "ris": "https://research.draconitic.com/paper/ceb0htxpfk0dq.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T00:20:34Z",
      "native_id": "MED:42948032",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42948032"
    },
    {
      "first_seen": "2026-10-31T12:21:18Z",
      "native_id": "PMC13710302",
      "source": "pmc",
      "url": "https://doi.org/10.3389/fsurg.2026.1865047"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2732|Foot and Ankle Surgery",
      "subfield": "surgery"
    }
  ],
  "title": "Case Report: Talonavicular joint replacement in congenital talonavicular coalition with individualized 3D-printed prosthesis.",
  "title_text": "Case Report: Talonavicular joint replacement in congenital talonavicular coalition with individualized 3D-printed prosthesis.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-31T12:21:18Z",
  "url": "https://research.draconitic.com/paper/ceb0htxpfk0dq",
  "venue": "Frontiers in surgery",
  "versions": []
}