Evidence map›Paper›PMID 34390386›Full record

ArticleArchives of orthopaedic and trauma surgery2022

Vancouver B and C periprosthetic fractures around the cemented Exeter Stem: sex is associate with fracture pattern.

M F R Powell-Bowns, E Oag, D Martin, N D Clement, C E H Scott

Open access · hybridAbstract read
In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2022. 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.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Periprosthetic Femoral Fractures-Beyond B2.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2024
    Review
  8. Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

M F R Powell-BownsEdinburgh Orthopaedics, Royal Infirmary of Edinburgh, Little France Cres, Edinburgh, EH164SA, UK. Matilda.powell-bowns@nhslothian.scot.nhs.uk.ORCID http://orcid.org/0000-0001-9839-1457
E OagEdinburgh Orthopaedics, Royal Infirmary of Edinburgh, Little France Cres, Edinburgh, EH164SA, UK.
D MartinEdinburgh Orthopaedics, Royal Infirmary of Edinburgh, Little France Cres, Edinburgh, EH164SA, UK.
N D ClementEdinburgh Orthopaedics, Royal Infirmary of Edinburgh, Little France Cres, Edinburgh, EH164SA, UK.
C E H ScottEdinburgh Orthopaedics, Royal Infirmary of Edinburgh, Little France Cres, Edinburgh, EH164SA, UK.
Edinburgh Royal Infirmary · GBNHS Lothian · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe aim of this study was to identify factors associated with the level of periprosthetic fracture involving a cemented polished tapered stem: Vancouver B or Vancouver C.

methodsA retrospective cohort study of 181 unilateral periprosthetic fractures involving Exeter stems was assessed by three observers (mean age 78.5, range 39-103; mean BMI 27.1, 17-39; 97 (54%) male). Patient demographics, deprivation scores, BMI and time since primary prosthesis were recorded. Femoral diameter, femoral cortical thickness, Dorr classification and distal cement mantle length were measured from calibrated radiographs. Interobserver reliability was calculated using intraclass correlation coefficients (ICCs). Univariate and multivariate analysis was performed to identify associations with Vancouver B or C fractures.

results160/181 (88%) Vancouver B and 21/181 (12%) Vancouver C-level fractures occurred at a mean of 5.9 ± 5.4 years (0.2-26.5) following primary surgery. Radiographic measurements demonstrated excellent agreement (ICC > 0.8, p < 0.001). Mortality was significantly higher following Vancouver C compared to B fractures: 90 day 14/160 Vs 5/21 (p = 0.05); 1 year 29/160 Vs 8/21 (p = 0.03). Univariate analysis demonstrated that Vancouver C fractures were associated with female sex, bisphosphonate use, cortical bone thickness, and distal cement mantle length (p < 0.05). On multivariate analysis, only female sex was an independent predictor of Vancouver C-level fractures (R

conclusionMost PFFs involving the Exeter stem design are Vancouver B-type fractures and appear to be independent of osteoporosis. In contrast, Vancouver C periprosthetic fractures display typical fragility fracture characteristics and are associated with female sex, thinner femoral cortices, longer distal cement mantles and high mortality.

Indexed as

Arthroplasty, Replacement, HipFemoral FracturesHip ProsthesisPeriprosthetic FracturesAgedBone CementsDiphosphonatesFemaleHumansMaleReoperationReproducibility of ResultsRetrospective StudiesBone CementsDiphosphonatesOsteoporosisPeriprosthetic femoral fractureTotal hip arthroplastyVancouver classification

Identifiers

PMID34390386
PMCPMC9522678
OpenAlexW3192612678

What OpenQuestion holds

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Registered trials

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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.