Evidence map›Paper›PMID 35538322›Full record

ReviewInternational orthopaedics2022

Neck of femur fractures treated with the femoral neck system: outcomes of one hundred and two patients and literature review.

Amit Davidson, Shlomo Blum, Elad Harats, Erick Kachko, Ahmad Essa, Ram Efraty, Amos Peyser, Peter V Giannoudis

Open access · hybridAbstract readCase ReportsReview
In one paragraph

Review in International orthopaedics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
11.3field-weighted citation impact, top 1% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Article
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  10. Early outcomes of the synthes femoral neck system for valgus-impacted femoral neck fractures: a multicenter retrospective study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  11. Article
  12. Fatigue testing of a self-compression screw model in Pauwels III fracture: an in vitro analysis.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  13. Article
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  15. Article
  16. Article
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  18. Article
  19. [Short-term effectiveness of robot-guided femoral neck system combined with cannulated compression screw fixation in treatment of femoral neck fracture in young and middle-aged patients].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2024
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Amit DavidsonAcademic Department of Trauma and Orthopaedic Surgery, School of Medicine, University of Leeds, Leeds, UK. Amitedavidson@gmail.com.
Shlomo BlumDepartment of Orthopaedic Surgery, Shaare Zedek Medical Center, Jerusalem, Israel.
Elad HaratsDepartment of Orthopaedic Surgery, Shaare Zedek Medical Center, Jerusalem, Israel.
Erick KachkoDepartment of Orthopaedic Surgery, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel.
Ahmad EssaDepartment of Orthopaedic Surgery, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel.
Ram EfratyDepartment of Orthopaedic Surgery, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel.
Amos PeyserDepartment of Orthopaedic Surgery, Shaare Zedek Medical Center, Jerusalem, Israel.
Peter V GiannoudisAcademic Department of Trauma and Orthopaedic Surgery, School of Medicine, University of Leeds, Leeds, UK.
Assaf Harofeh Medical Center · ILShaare Zedek Medical Center · ILUniversity of Leeds · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe recently developed femoral neck system (FNS) for treatment of femoral neck fractures (FNF), comprises theoretical biomechanical advantages compared to other implants. The aim of this study was to validate the safety and to report outcomes of patients treated with the FNS.

methodA retrospective multicentric analysis of patients treated by FNS with a minimum of three months of follow-up. Details analysed from three medical centres were operative duration, estimated blood loss, initial hospitalisation duration, fixation quality as well as complications and reoperation rate. Patients who had revision surgery were compared to all other patients to identify risk factors for failure. In addition, a literature review was performed to analyse data on FNS clinical implementation and patient's outcomes. The two data sets were combined and analysed.

resultsOne-hundred and two patients were included in this study cohort with an average follow-up of seven months (range 3-27). Ten papers were included in the literature review, reporting data on 278 patients. Overall, 380 patients were analysed. Average age was 62.6 years, 52% of the fractures were classified as Gardens 1-2. Overall, the revision rate was 9.2% (14 patients diagnosed with cut-out of implant, 10 with AVN, 8 with non-union and 8 with hardware removal). For the 102 patients in the cohort risk factors for reoperation included patients age, surgeon seniority and inadequate placement of the implant.

conclusionThis study shows that FNS is a safe treatment option for FNF. Intra-operative parameters and failure rates are comparable to previously reported rates for this implant and other frequently used implants.

Indexed as

Femoral FracturesFemoral Neck FracturesFemur NeckFracture Fixation, InternalHumansMiddle AgedRetrospective StudiesComplicationsFemoral neck fracturesFemoral neck systemFNSRevision rateRisk factors

Identifiers

PMID35538322
PMCPMC9372123
OpenAlexW4280501298

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.