Evidence map›Paper›PMID 39294466›Full record

ArticleAnnals of biomedical engineering2024

How Well Do Popular Bicycle Helmets Protect from Different Types of Head Injury?

C E Baker, X Yu, B Lovell, R Tan, S Patel, M Ghajari

Abstract read
In one paragraph

Article in Annals of biomedical engineering, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

6 authors.

C E BakerHEAD Lab, Dyson School of Design Engineering, Imperial College London, London, SW7 2AZ, UK. c.baker17@imperial.ac.uk.ORCID http://orcid.org/0000-0001-9729-6087
X YuHEAD Lab, Dyson School of Design Engineering, Imperial College London, London, SW7 2AZ, UK.
B LovellHEAD Lab, Dyson School of Design Engineering, Imperial College London, London, SW7 2AZ, UK.
R TanHEAD Lab, Dyson School of Design Engineering, Imperial College London, London, SW7 2AZ, UK.
S PatelHEAD Lab, Dyson School of Design Engineering, Imperial College London, London, SW7 2AZ, UK.
M GhajariHEAD Lab, Dyson School of Design Engineering, Imperial College London, London, SW7 2AZ, UK.

Funding

Road Safety Trust (UK) 253_0_21Royal Academy of Engineering (UK) RCSRF2324-17-19
6 · The paper itself

Abstract

Bicycle helmets are designed to protect against skull fractures and associated focal brain injuries, driven by helmet standards. Another type of head injury seen in injured cyclists is diffuse brain injuries, but little is known about the protection provided by bicycle helmets against these injuries. Here, we examine the performance of modern bicycle helmets in preventing diffuse injuries and skull fractures under impact conditions that represent a range of real-world incidents. We also investigate the effects of helmet technology, price, and mass on protection against these pathologies. 30 most popular helmets among UK cyclists were purchased within 9.99-135.00 GBP price range. Helmets were tested under oblique impacts onto a 45° anvil at 6.5 m/s impact speed and four locations, front, rear, side, and front-side. A new headform, which better represents the average human head's mass, moments of inertia and coefficient of friction than any other available headforms, was used. We determined peak linear acceleration (PLA), peak rotational acceleration (PRA), peak rotational velocity (PRV), and BrIC. We also determined the risk of skull fractures based on PLA (linear risk), risk of diffuse brain injuries based on BrIC (rotational risk), and their mean (overall risk). Our results show large variation in head kinematics: PLA (80-213 g), PRV (8.5-29.9 rad/s), PRA (1.6-9.7 krad/s

Indexed as

BicyclingCraniocerebral TraumaHead Protective DevicesHumansSkull FracturesBicycle helmetBicycle helmet testingBicycle protective safetyBrain injury preventionBrain injury riskInjury biomechanicsSafety rating

Identifiers

PMID39294466
PMCPMC11561050

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.