Evidence map›Paper›PMID 40856880›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2025

Early outcomes of the synthes femoral neck system for valgus-impacted femoral neck fractures: a multicenter retrospective study.

Noelle L Van Rysselberghe, Harsh Wadhwa, Seth S Tigchelaar, Sara K Shin, Rosser W McCallie, Evan M Miller, Ameen Barghi, Richard S Moore, Andrea Hankins, Jennifer Sharp and 12 more

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

22 authors.

Noelle L Van RysselbergheStanford Hospitals and Clinics, Stanford, USA. noellevanr@gmail.com.
Harsh WadhwaStanford Hospitals and Clinics, Stanford, USA.
Seth S TigchelaarStanford Hospitals and Clinics, Stanford, USA.
Sara K ShinUniversity of Washington, Seattle, USA.
Rosser W McCallieWake Forest University, Winston-Salem, USA.
Evan M MillerWake Forest University, Winston-Salem, USA.
Ameen BarghiWake Forest University, Winston-Salem, USA.
Richard S MooreEmergeOrtho, Wilmington, USA.
Andrea HankinsSutter Roseville Medical Center, Roseville, USA.
Jennifer SharpSutter Roseville Medical Center, Roseville, USA.
Robert P DunbarUniversity of Washington, Seattle, USA.
Michael F GithensUniversity of Washington, Seattle, USA.
Sean E NorkUniversity of Washington, Seattle, USA.
Conor P KlewenoUniversity of Washington, Seattle, USA.
Michael J BellinoStanford Hospitals and Clinics, Stanford, USA.
Christopher ParksEmergeOrtho, Wilmington, USA.
Jonah Hebert-DaviesUniversity of Washington, Seattle, USA.
Eben A CarrollWake Forest University, Winston-Salem, USA.
Christopher G FinkemeierSutter Roseville Medical Center, Roseville, USA.
L Henry GoodnoughStanford Hospitals and Clinics, Stanford, USA.
Julius A BishopStanford Hospitals and Clinics, Stanford, USA.
Michael J GardnerStanford Hospitals and Clinics, Stanford, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionNondisplaced and valgus-impacted femoral neck fractures have traditionally been treated with screw fixation, but reoperation rates remain high. This study reports clinical outcomes following internal fixation of low-energy femoral neck fractures (AO/OTA 31B1.1 and 31B1.2) using a new, fixed-angle sliding device.

methodsThis was a multi-institutional retrospective review at four academic Level I Trauma Centers, one Level II Trauma Center, and one Level III Trauma Center. Patients with AO/OTA 31B1.1 and 31B1.2 fractures who underwent internal fixation using the Femoral Neck System ("FNS," DePuy Synthes, West Chester, PA) and had follow-up to radiographic union or reoperation (mean 11.9 months) were included. Fractures with ≥ 20° of posterior tilt were included but distinguished as the "posterolateral" group. Primary outcome was reoperation rate. Secondary outcomes included fixation failure, infection, nonunion, and mortality rates at 3 and 6 months.

resultsA total of 116 patients met inclusion criteria including 109 "stable" fractures with < 20° of posterior tilt, and seven valgus-impacted fractures with ≥ 20° of posterior tilt ("posterolateral"). All posterolateral fractures underwent a reduction maneuver to reduce posterior tilt prior to fixation. Overall reoperation rate was 10%, including a 5.2% reoperation rate for AVN, with no patients in the posterolateral group requiring reoperation. Nonunion rate was 1.8%, and there was only one case of acute fixation failure (0.9%), which occurred after a repeat fall. Mortality rate was 0.9% at 3 months and 2.2% at 6 months.

conclusionsSurgical fixation of nondisplaced and valgus-impacted femoral neck fractures with a femoral neck-specific, fixed-anglescrew-side plate device appears safe and effective. Reoperation rate remained low in the high-risk posterolateral subgroup when reduction maneuvers were performed. LEVEL OF EVIDENCE: III.

Indexed as

Femoral Neck FracturesFracture Fixation, InternalAdultAgedAged, 80 and overBone ScrewsFemaleFractures, UnunitedHumansMaleMiddle AgedReoperationRetrospective StudiesTreatment OutcomeFemoral neckGeriatric traumaHip fracture

Identifiers

PMID40856880

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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.