Evidence map›Paper›PMID 34526047›Full record

Observational studyJournal of orthopaedic surgery and research2021

Epidemiology, classification, treatment, and mortality of adult femoral neck and basicervical fractures: an observational study of 40,049 fractures from the Swedish Fracture Register.

Jonas Sundkvist, Anders Brüggeman, Arkan Sayed-Noor, Michael Möller, Olof Wolf, Sebastian Mukka

Abstract readObservational Study
In one paragraph

Observational study in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

28 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  5. Re‑fracture risk following implant removal in consolidated hip fractures: a multicenter retrospective cohort study of 575 patients.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
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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

6 authors.

Jonas SundkvistDepartment of Surgical and Perioperative Sciences, Orthopaedics, Umeå University, Umeå, Sweden. jonas.sundkvist@umu.se.ORCID http://orcid.org/0000-0003-4615-7276
Anders BrüggemanSection of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.ORCID https://orcid.org/0000-0002-3600-253X
Arkan Sayed-NoorDepartment of Clinical Science and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden.ORCID https://orcid.org/0000-0002-0658-1112
Michael MöllerInstitute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.ORCID https://orcid.org/0000-0001-7394-6057
Olof WolfSection of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.ORCID https://orcid.org/0000-0001-6668-8715
Sebastian MukkaDepartment of Surgical and Perioperative Sciences, Orthopaedics, Umeå University, Umeå, Sweden.ORCID https://orcid.org/0000-0002-5469-2730

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough femoral neck fractures (FNFs) are common in orthopedic departments, optimal treatment methods remain in dispute. There are few large nationwide studies, including basicervical FNFs (bFNFs), on epidemiology, treatment, and mortality. This nationwide study aims to describe the epidemiology, fracture classification, current treatment regimens, and mortality of undisplaced and minimally displaced (Garden I-II, uFNF), displaced (Garden III-IV, dFNF) and bFNFs in adults.

methodsAll FNFs, including bFNFs with a registered injury date between 1 April 2012 and 31 December 2020, were included in this observational study from the Swedish Fracture Register (SFR). Data on age, sex, injury mechanism, fracture classification, primary treatment, and seasonal variation were analyzed.

resultsSome 40,049 FNFs were registered in the SFR. The mean age of the patients in the register was 80.3 (SD 11) years and 63.8% (25,567) were female. Of all FNFs, 25.0% (10,033) were uFNFs, 63.4% (25,383) dFNFs, and 11.6% (4,633) bFNFs. Non-surgical treatment was performed in 0.6% (261) of the patients. Internal fixation (IF) (84.7%) was the main treatment for uFNFs and arthroplasty (87.3%) for dFNFs. For bFNFs, IF (43.8%) and hip arthroplasty (45.9%) were performed equally often. Of the 33,105 patients with a 1-year follow-up mortality at 1-year was 20.6% for uFNF, 24.3% for dFNF, and 25.4% for bFNF.

conclusionThe main treatment of uFNFs is IF with screws or pins. Hip arthroplasty is the predominant treatment for dFNF. bFNF are more common than previously reported and treated with IF or arthroplasty, depending on patient age. These results may help health care providers, researchers and clinicians better understand the panorama of FNFs in Sweden. LEVEL OF EVIDENCE: IV, retrospective cohort study.

Indexed as

Femoral Neck FracturesFemur NeckAgedAged, 80 and overBone NailsFemaleFracture Fixation, InternalHumansMaleRetrospective StudiesSwedenTreatment Outcome

Identifiers

PMID34526047
PMCPMC8442466

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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.