Evidence map›Paper›PMID 35129719›Full record

ArticleAnnals of biomedical engineering2022

The Influence of Fall Direction and Hip Protector on Fracture Risk: FE Model Predictions Driven by Experimental Data.

Ellie S Galliker, Andrew C Laing, Stephen J Ferguson, Benedikt Helgason, Ingmar Fleps

Open access · hybridAbstract read
In one paragraph

Article in Annals of biomedical engineering, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 3 pooled it
4.4field-weighted citation impact, top 4% 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

12 citing papers in PubMed, 3 syntheses or guidelines pooled it, 25 citations in OpenAlex.

  1. Human fall simulation testing method: where we are.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025
    Pooled it
  2. Pooled it
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  4. Sex-specific predictive equations for estimating trochanteric soft tissue thickness across body positions and imaging modalities.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2026
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  8. How accurately do finite element models predict the fall impact response of ex vivo specimens augmented by prophylactic intramedullary nailing?Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
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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

5 authors at 2 institutions in 2 countries.

Ellie S GallikerInstitute for Biomechanics, ETH-Zurich, Zurich, Switzerland.
Andrew C LaingDepartment of Kinesiology and Health Sciences, University of Waterloo, Waterloo, Canada.
Stephen J FergusonInstitute for Biomechanics, ETH-Zurich, Zurich, Switzerland.
Benedikt HelgasonInstitute for Biomechanics, ETH-Zurich, Zurich, Switzerland.
Ingmar FlepsInstitute for Biomechanics, ETH-Zurich, Zurich, Switzerland. flepsi@bu.edu.ORCID http://orcid.org/0000-0002-6254-8878
ETH Zurich · CHUniversity of Waterloo · CA

Funding

ETH Domain (Strategic Focus Area "Personalized Health and Related Technologies) #2018-430
6 · The paper itself

Abstract

Hip fractures in older adults, which often lead to lasting impairments and an increased risk of mortality, are a major public health concern. Hip fracture risk is multi-factorial, affected by the risk of falling, the load acting on the femur, and the load the femur can withstand. This study investigates the influence of impact direction on hip fracture risk and hip protector efficacy. We simulated falls for 4 subjects, in 7 different impact directions (15° and 30° anterior, lateral, and 15°, 30°, 60°, and 90° posterior) at two different impact velocities (2.1 and 3.1 m/s), all with and without hip protector, using previously validated biofidelic finite element models. We found the highest number of fractures and highest fragility ratios in lateral and 15° posterior impacts. The hip protector attenuated femur forces by 23-49 % for slim subjects under impact directions that resulted in fractures (30° anterior to 30° posterior). The hip protector prevented all fractures (6/6) for 2.1 m/s impacts, but only 10% of fractures for 3.1 m/s impacts. Our results provide evidence that, regarding hip fracture risk, posterior-lateral impacts are as dangerous as lateral impacts, and they support the efficacy of soft-shell hip protectors for anterior- and posterior-lateral impacts.

Indexed as

Accidental FallsBiomechanical PhenomenaComputer SimulationFinite Element AnalysisHip FracturesHumansPressureProtective DevicesStress, MechanicalBoneElderlyFemurFinite element modelHip protectorImpactImpact direction

Identifiers

PMID35129719
PMCPMC8847295
OpenAlexW4210914758

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.