Evidence map›Paper›PMID 35351073›Full record

ArticleBMC musculoskeletal disorders2022

Distribution of hounsfield unit values in the pelvic bones: a comparison between young men and women with traumatic fractures and older men and women with fragility fractures: a retrospective cohort study.

Naoya Inagaki, Takaaki Tanaka, Jun Udaka, Shoshi Akiyama, Tatsuki Matsuoka, Mitsuru Saito

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
3.3field-weighted citation impact, top 8% 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

8 citing papers in PubMed, 17 citations in OpenAlex.

  1. Low energy Schatzker IV, V, and VI tibial plateau fractures are a marker of local poor bone quality.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026
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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 at 2 institutions in 1 country.

Naoya InagakiDepartment of Orthopedic Surgery, The Jikei University School of Medicine, Tokyo, Japan. n.inagaki@jikei.ac.jp.
Takaaki TanakaDepartment of Orthopedic Surgery, NHO Utsunomiya National Hospital, Tochigi, Japan.
Jun UdakaDepartment of Orthopedic Surgery, The Jikei University School of Medicine, Tokyo, Japan.
Shoshi AkiyamaDepartment of Orthopedic Surgery, The Jikei University School of Medicine, Tokyo, Japan.
Tatsuki MatsuokaDepartment of Orthopedic Surgery, The Jikei University School of Medicine, Tokyo, Japan.
Mitsuru SaitoDepartment of Orthopedic Surgery, The Jikei University School of Medicine, Tokyo, Japan.
Jikei University School of Medicine · JPSaiseikai Utsunomiya hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe fixation strength of bone screws depends on bone mineral density (BMD), so it is important to evaluate bone strength at fracture sites. Few studies have investigated BMD in the pelvis. The aims of this study were to measure the regional Hounsfield unit (HU) values in the cancellous bone of the acetabulum and pelvic ring and to compare these values between young and older patients.

methodsThis study enrolled young patients with high-energy trauma (aged 20-44 years; young group) and older patients with low-energy trauma (aged 65-89 years; older group). Patients without pelvic computed tomography (CT) scans, those with pelvic bone implants, and those who died were excluded. The HU values on the contralateral (non-fractured) side of the pelvis were measured on CT scans. The CT data were divided into 7 areas: the pubic bone, the anterior and posterior walls and roof of the acetabulum, the ischial tuberosity, the body of the ilium, and the third lumbar vertebra. The HU values in each area were compared between the young and older groups.

resultsSixty-one young patients and 154 older patients were included in the study. The highest HU value was in the roof of the acetabulum regardless of age and sex. HU values were significantly higher in the ischial tuberosity and body of the ilium and lower in the pubic bone and anterior wall. The HU values in all pelvic areas were significantly lower in the older group than in the young group, especially in the anterior area.

conclusionsHU values in the 6 pelvic areas were not uniform and were strongly related to load distribution. The HU distribution and age-related differences could explain the characteristic causes and patterns of acetabular fractures in the older and may help in surgical treatment.

Indexed as

Fractures, BoneSpinal FracturesAdultAgedAged, 80 and overBone DensityFemaleHumansIschiumMaleRetrospective StudiesYoung AdultBone mineral densityFragility fractureHounsfield unitPelvic fracture

Identifiers

PMID35351073
PMCPMC8966165
OpenAlexW4220818485

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LicenceCC BY
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Registered trials

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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.