Trial reportInternational orthopaedics2013
Unipolar hemiarthroplasty versus bipolar hemiarthroplasty in patients with displaced femoral neck fractures: a four-year follow-up of a randomised controlled trial.
Trial report in International orthopaedics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 9 of them syntheses that pooled it.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
42 citing papers in PubMed, 9 syntheses or guidelines pooled it, 120 citations in OpenAlex.
- Patients with femoral neck fractures treated by bipolar hemiarthroplasty have superior to unipolar hip function and lower erosion rates and pain: a systematic review and meta-analysis of randomized controlled studies.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2023Pooled it
- Arthroplasties for hip fracture in adults.The Cochrane database of systematic reviews · 2022Pooled it
- Surgical interventions for treating intracapsular hip fractures in older adults: a network meta-analysis.The Cochrane database of systematic reviews · 2022Pooled it
- Bipolar versus monopolar hemiarthroplasty for displaced femur neck fractures: a meta-analysis study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2020Pooled it
- Do outcomes reported in randomised controlled trials of joint replacement surgery fulfil the OMERACT 2.0 Filter? A review of the 2008 and 2013 literature.Systematic reviews · 2017Pooled it
- Patient-reported outcome measures in older people with hip fracture: a systematic review of quality and acceptability.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2017Pooled it
- Comparison of bipolar hemiarthroplasty and total hip arthroplasty for displaced femoral neck fractures in the healthy elderly: a meta-analysis.BMC musculoskeletal disorders · 2015Pooled it
- Unipolar versus bipolar hemiarthroplasty for displaced femoral neck fractures: a systematic review and meta-analysis of randomized controlled trials.Journal of orthopaedic surgery and research · 2015Pooled it
- Meta-analysis of randomised controlled trials comparing unipolar with bipolar hemiarthroplasty for displaced femoral-neck fractures.International orthopaedics · 2014Pooled it
- Higher cartilage wear in unipolar than bipolar hemiarthroplasties of the hip at 2 years: A randomized controlled radiostereometric study in 19 fit elderly patients with femoral neck fractures.Acta orthopaedica · 2018Trial
- Dislocation and Iatrogenic Dissociation of Bipolar Hip Hemiarthroplasty: A Case Series and Literature Review.Journal of orthopaedic case reports · 2026Article
- Functional outcome of cemented austin moor hemiarthroplasty for treatment of neck femur fracture in elderly.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025Article
- Pipkin type III fractures: a narrative review of literature and comparative opinion on ORIF vs. arthroplasty.Frontiers in surgery · 2025Review
- Symptomatic Acetabular Erosion After Hip Hemiarthroplasty: Is It a Major Concern? A Retrospective Analysis of 2477 Hemiarthroplasty Cases.Journal of clinical medicine · 2024Article
- Article
- Unipolar Hip Hemiarthroplasty in Geriatric Patients: A Prospective Study and Analysis of Clinical and Radiological Outcomes.Geriatric orthopaedic surgery & rehabilitation · 2024Article
- Long-term risk of reoperation after modular hemiarthroplasty : Any differences between uni- or bipolar design?BMC musculoskeletal disorders · 2023Observational
- Cost-effectiveness analysis of the Geriatric Fracture Center (GFC) concept: a prospective multicentre cohort study.BMJ open · 2023Article
- Outcomes of Total Hip Replacement for Failed Hemiarthroplasty.Indian journal of orthopaedics · 2023Article
- Total hip arthroplasty compared to bipolar and unipolar hemiarthroplasty for displaced hip fractures in the elderly: a Bayesian network meta-analysis.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe treatment of choice for a displaced femoral neck fracture in the most elderly patients is a cemented hemiarthroplasty (HA). The optimal design, unipolar or bipolar head, remains unclear. The possible advantages of a bipolar HA are a better range of motion and less acetabular wear. The aim of this study was to evaluate hip function, health related quality of life (HRQoL), surgical outcome and acetabular erosion in a medium-term follow-up.
methodsOne hundred and twenty patients aged 80 or more with a displaced fracture of the femoral neck (Garden III and IV) were randomised to treatment with a cemented Exeter HA using a unipolar or a bipolar head. All patients were able to walk independently, with or without aids, before surgery. Follow-ups were performed at four, 12, 24 and 48 months postoperatively. Assessments included HRQoL (EQ-5D index score), hip function (Harris hip score [HHS]) and radiological acetabular erosion.
resultsThe mean EQ-5D index score was generally higher among the patients with bipolar hemiarthroplasties at the follow-ups with a significant difference at 48 months: unipolar HAs 0.59 and bipolar HAs 0.70 (p = 0.04). There was an increased rate of acetabular erosion among the patients with unipolar hemiarthroplasties at the early follow-ups with a significant difference at 12 months (unipolar HAs 20% and bipolar HAs 5%, p = 0.03). At the later follow-ups the incidence of acetabular erosion accelerated in the bipolar group, and there were no significant differences between the groups at the 24- and 48-month follow-ups. There was no difference in HHS or reoperation rate between the groups at any of the follow-ups.
conclusionThe bipolar HAs seem to result in better HRQoL beyond the first two years after surgery compared to unipolar HAs. Bipolar HAs displayed a later onset of acetabular erosion compared to unipolar HAs.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.