ArticleBMC musculoskeletal disorders2013
Hemiarthroplasties in young patients with osteonecrosis or a tumour of the proximal femur; an observational cohort study.
Article in BMC musculoskeletal disorders, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- [Management of complications in megaprostheses].Der Unfallchirurg · 2014Pooled it
- Long-term clinical outcomes of modular endoprosthetic reconstruction for primary bone tumours of the proximal femur.Journal of bone oncology · 2026Article
- Article
- [Current results of tumour endoprosthetics in adolescents and adults].Der Orthopade · 2019Review
- Treatment of pathological fractures of the long bones.EFORT open reviews · 2016Article
- The effect of osteoarthritis on functional outcome following hemiarthroplasty for femoral neck fracture: a prospective observational study.BMC musculoskeletal disorders · 2015Observational
- Low femoral antetorsion as a risk factor for bony impingement after bipolar hemiarthroplasty.Journal of orthopaedic surgery and research · 2015Article
- A 42-year-old patient presenting with femoral head migration after hemiarthroplasty performed 22 years earlier: a case report.Journal of medical case reports · 2015Review
- Bipolar hip arthroplasty for avascular necrosis of femoral head in young adults.Indian journal of orthopaedicsArticle
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe failure scenario in total hip arthroplasty (THA), in younger patients, is dependent on the fixation and wear of the acetabular component. In selected cases, where endoprosthetic replacement of the femoral head is unavoidable for limb salvage or functional recovery, hemiarthroplasty can be chosen as an alternative. The purpose of this study is to evaluate hemiarthroplasty as treatment strategy for young patients with osteonecrosis or a tumour of the proximal femur.
methodsBetween 1985 and 2008, 42 hemiarthroplasties (unipolar and bipolar) were performed in patients younger than 65 years with osteonecrosis (n=13) or a tumour of the proximal femur (n=29). All patients were seen at yearly follow-up examination and evaluated. Revision or conversion to a THA was regarded as a failure of the implant. A Kaplan Meier analysis was performed. To determine significant differences between categorical groups, the Pearson chi-square test was used. In numerical groups the independent T-test and One-way ANOVA were used.
resultsAfter a mean follow-up of 7.1 years, failure of the hemiarthroplasty occurred 6 times. The Kaplan Meier survival analysis with conversion to THA or revision as endpoint of the bipolar hemiarthroplasties (n=38) shows a 96% survival at 15, and 60% at 20 years. In the unipolar type (n=4) we found a conversion rate of 50% within 3 years.
conclusionsBipolar hemiarthroplasty is a reasonable alternative in a young patient with osteonecrosis or a tumour of the proximal femur as indication. Because of the high conversion rate after unipolar hemiarthroplasties, we would not recommend this type of prosthesis in the young patient.
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