Trial reportInternational orthopaedics2012
Unipolar versus bipolar Exeter hip hemiarthroplasty: a prospective cohort study on 830 consecutive hips in patients with femoral neck fractures.
Trial report in International orthopaedics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 4 of them syntheses 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.
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
22 citing papers in PubMed, 4 syntheses or guidelines pooled it, 61 citations in OpenAlex.
- Bipolar versus monopolar hemiarthroplasty for displaced femur neck fractures: a meta-analysis study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2020Pooled it
- Bipolar versus unipolar hemiarthroplasty for displaced femoral neck fractures in the elder patient: a systematic review and meta-analysis of randomized trials.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 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
- Total hip arthroplasty versus hemiarthroplasty for displaced femoral neck fractures: meta-analysis of randomized trials.Clinical orthopaedics and related research · 2012Pooled it
- Dislocation of bipolar hip hemiarthroplasty through a postero-lateral approach for femoral neck fractures: A cohort study.International orthopaedics · 2015Trial
- Unipolar hemiarthroplasty versus bipolar hemiarthroplasty in patients with displaced femoral neck fractures: a four-year follow-up of a randomised controlled trial.International orthopaedics · 2013Trial
- Routine Early Post-operative X-Ray Following Partial Hip Replacement After Femoral Hip Fracture Is Unjustified: A Retrospective Study.Geriatric orthopaedic surgery & rehabilitation · 2026Article
- Bipolar hemiarthroplasty for femoral neck fractures in elderly patients: a retrospective study of 1001 patients.Archives of orthopaedic and trauma surgery · 2025Article
- The SPAIRE (saving piriformis and internus, repair of externus) posterolateral approach in bipolar hemiarthroplasty for femoral neck fractures: a case report.Journal of trauma and injury · 2025Article
- Incidence of dislocation and associated risk factors in patients with a femoral neck fracture operated with an uncemented hemiarthroplasty.BMC musculoskeletal disorders · 2024Article
- Hip Hemiarthroplasty: The Misnomer of a Narrow Femoral Canal and the Cost Implications.Cureus · 2021Article
- Dislocation of hemiarthroplasty after hip fracture is common and the risk is increased with posterior approach: result from a national cohort of 25,678 individuals in the Swedish Hip Arthroplasty Register.Acta orthopaedica · 2021Article
- The effects of cement fixation on survival in elderly patients with hip hemiarthroplasty: a nationwide cohort study.BMC musculoskeletal disorders · 2019Article
- Five cases of early dissociation between the bipolar hip endoprosthesis cup components; either spontaneously or during reduction maneuvers.Acta orthopaedica et traumatologica turcica · 2017Article
- The Dislocated Hip Hemiarthroplasty: Current Concepts of Etiological factors and Management.The open orthopaedics journal · 2017Article
- Is It Time to Phase Out the Austin Moore Hemiarthroplasty? A Propensity Score Matched Case Control Comparison versus Cemented Hemiarthroplasty.BioMed research international · 2016Article
- Low femoral antetorsion as a risk factor for bony impingement after bipolar hemiarthroplasty.Journal of orthopaedic surgery and research · 2015Article
- Hemiarthroplasties in young patients with osteonecrosis or a tumour of the proximal femur; an observational cohort study.BMC musculoskeletal disorders · 2013Article
- The cartilage degeneration and joint motion of bipolar hemiarthroplasty.International orthopaedics · 2012Article
- Hip arthroplasty after failed fixation of trochanteric and subtrochanteric fractures.Acta orthopaedica · 2012Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHip replacement using a hemiarthroplasty (HA) is a common surgical procedure in elderly patients with fractures of the femoral neck. Data from the Swedish Hip Arthroplasty Register suggest that there is a higher risk for revision surgery with the bipolar HA compared with the unipolar HA. PURPOSE: In this study we analysed the reoperation and the dislocation rates for Exeter HAs in patients with a displaced femoral neck fracture, comparing the unipolar and bipolar prosthetic designs. Additionally, we compared the outcome for HAs performed as a primary intervention with those performed secondary to failed internal fixation.
methodsWe studied 830 consecutive Exeter HAs (427 unipolar and 403 bipolar) performed either as a primary operation for a displaced fracture of the femoral neck or as a secondary procedure after failed internal fixation of a fracture of the femoral neck. Cox regression analyses were performed to evaluate factors associated with reoperation and prosthetic dislocation. Age, gender, the surgeon's experience, indication for surgery (primary or secondary) and type of HA (unipolar or bipolar) were tested as independent variables in the model.
resultsThe prosthetic design (uni- or bipolar) had no influence on the risk for reoperation or dislocation, nor had the age, gender or the surgeon's experience. The secondary HAs were associated with a significantly increased risk for reoperation (HR 2.6, CI 1.5-4.5) or dislocation (HR 3.3, CI 1.4-7.3) compared to the primary HAs. We found no difference in the risk for reoperation or dislocation when comparing Exeter unipolar and bipolar HAs, but special attention is called for to reduce the risk of prosthesis dislocation and reoperation after a secondary HA.
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Registered trials
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