Evidence map›Paper›PMID 34734328›Full record

ArticleArchives of orthopaedic and trauma surgery2022

First clinical results of 1-year follow-up of the femoral neck system for internal fixation of femoral neck fractures.

Robert C Stassen, Ralph M Jeuken, Bert Boonen, Berry Meesters, Erik R de Loos, Raoul van Vugt

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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 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–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

22 citing papers in PubMed.

  1. Article
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  3. Comparable results for the Femoral Neck System and three-screw fixation in femoral neck fracture treatment.OTA international : the open access journal of orthopaedic trauma · 2025
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  16. Survivability of the Femoral Neck System for the treatment of femoral neck fractures in adults.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2023
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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.

Robert C StassenDepartment of Traumatology, Zuyderland Medisch Centrum, Henri Dunantstraat 5, 6419 PC, Heerlen, The Netherlands.
Ralph M JeukenDepartment of Traumatology, Zuyderland Medisch Centrum, Henri Dunantstraat 5, 6419 PC, Heerlen, The Netherlands.
Bert BoonenDepartment of Orthopaedics, Zuyderland Medisch Centrum, Heerlen, The Netherlands.
Berry MeestersDepartment of Traumatology, Zuyderland Medisch Centrum, Henri Dunantstraat 5, 6419 PC, Heerlen, The Netherlands.
Erik R de LoosDepartment of Traumatology, Zuyderland Medisch Centrum, Henri Dunantstraat 5, 6419 PC, Heerlen, The Netherlands.
Raoul van VugtDepartment of Traumatology, Zuyderland Medisch Centrum, Henri Dunantstraat 5, 6419 PC, Heerlen, The Netherlands. r.vanvugt@zuyderland.nl.ORCID http://orcid.org/0000-0002-3293-7223

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundClosed reduction and internal fixation (CRIF) is the preferred treatment to retain the native joint and maintain optimal functionality in femoral neck fractures. Sliding hip screw (SHS) and cannulated hip screws (CHS) are established CRIF options. SHS offer high biomechanical stability, whereas CHS are minimally invasive. These established systems have a 17-21% failure rate. The Femoral neck system (FNS) was recently developed to combine the advantages of both predecessors. The aim of this study was to describe the first clinical experience with this novel implant with special emphasis on the safety and efficacy.

methodsDuring a 1-year period all patients in our level-2 trauma centre with a FNF indicated for CRIF were treated using the FNS and evaluated at 2, 6, 12 weeks, 6 months and 1 year postoperatively using patient and fracture characteristics, surgical notes and radiographic imaging.

resultsThirty-four patients were included, mean age was 63 years (SD 8), 58.2% was female. Fractures were classified as Pauwels I (n = 10), Pauwels II (n = 15), Pauwels III (n = 9), Garden I (n = 1), Garden II (n = 17), Garden III (n = 12) and Garden IV (n = 4). Eight reoperations were reported after 1-year follow-up; osteosyntheses failed in 6 patients due to avascular necrosis (n = 4) and cut-out (n = 2). In two patients the implant was removed due to inexplicable pain. Age (< 65 years) was related to lower risk for failure. There was a trend for females having more failures.

conclusionThis study indicates that the FNS is a potential safe and effective CRIF modality. Age (< 65 years) is an important factor to keep in mind when selecting patients for CRIF as it is related to lower risk for failure. Future long-term follow-up studies with larger populations should indicate if functional results and risk factors for failure are comparable to SHS or CHS.

Indexed as

Femoral Neck FracturesAgedBone ScrewsFemaleFemur NeckFollow-Up StudiesFracture Fixation, InternalHumansMiddle AgedCRIFFemoral neckFemoral neck systemHip fracture

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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.