{
  "abstract": "Background: Porous tantalum implantation is a head-preserving alternative to core decompression in osteonecrosis of the femoral head. Reporting has declined in North America and Europe while continuing elsewhere; outcomes are discordant. Prior syntheses are dated and treated the two endpoints as interchangeable. Methods: MEDLINE, Embase, Web of Science, and the Cochrane Library were searched to September 2025. Eligible studies reported head-preserving implantation in ≥5 hips followed ≥12 months, retrieval analyses excepted. The two endpoints were co-primary and pooled separately by random-effects Freeman-Tukey models with Hartung-Knapp adjustment. Results: Twenty-two records (946 hips) contributed. Pooled conversion was 20.3% (95% CI 13.5-27.9; I2 = 78.8%; prediction interval 0.3-54.9). Eighteen records (729 hips) reported radiographic progression, pooled at 26.8% (95% CI 16.7-38.2), exceeding conversion within the cohort in twelve of sixteen records with matched denominators (p = 0.003). Surgical technique was the only moderator associated with either outcome: rod alone versus an adjunctive procedure gave 27.2% versus 13.9% for conversion (p = 0.028) and 37.4% versus 18.4% for progression (p = 0.041), surviving adjustment for region but not removal of the one internally controlled cohort or alternative classification of three records. Region, stage, implant generation and follow-up showed no association. It persisted within a single staging system. Retrieval analyses showed minimal ingrowth into necrotic bone. Conclusions: Roughly one hip in five proceeds to arthroplasty, and radiographic deterioration is more frequent. Dispersion may relate to whether a substrate for repair was supplied, not to geography or device, but that association is fragile and is offered as a hypothesis.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Orthopedic Surgery, Medicover Hospital, Aleja Rzeczypospolitej 5, 02-972 Warsaw, Poland.",
    "Medical Rehabilitation Center, Sobieskiego 47D, 05-120 Legionowo, Poland."
  ],
  "article_type": "systematic review",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Tomasz Poboży",
      "orcid": "0000-0002-1376-2966"
    },
    {
      "affs": [
        1
      ],
      "name": "Wojciech Konarski",
      "orcid": "0000-0001-5542-9988"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/04htzmxj3f423.bib",
  "cited_by": 0,
  "doi": "10.3390/medsci14060640",
  "fulltext_url": "https://europepmc.org/articles/PMC13707016",
  "id": "04htzmxj3f423",
  "issns": [
    "2076-3271"
  ],
  "landing_url": "https://europepmc.org/article/MED/42930559",
  "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": [
    [
      "openalex",
      "2732|Bone and Joint Diseases"
    ]
  ],
  "openalex": "W7220453982",
  "pdf_url": "https://europepmc.org/articles/PMC13707016?pdf=render",
  "pmcid": "PMC13707016",
  "pmid": "42930559",
  "published": "2026-10-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/04htzmxj3f423.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "MED:42930559",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42930559"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2732|Bone and Joint Diseases",
      "subfield": "surgery"
    }
  ],
  "title": "Femoral Head-Preserving Porous Tantalum Implantation for Osteonecrosis of the Femoral Head: A Systematic Review and Meta-Analysis of Conversion to Total Hip Arthroplasty, Radiographic Progression, and Modes of Failure.",
  "title_text": "Femoral Head-Preserving Porous Tantalum Implantation for Osteonecrosis of the Femoral Head: A Systematic Review and Meta-Analysis of Conversion to Total Hip Arthroplasty, Radiographic Progression, and Modes of Failure.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/04htzmxj3f423",
  "venue": "Medical sciences (Basel, Switzerland)",
  "versions": []
}