Evidence map›Paper›PMID 31435532›Full record

ArticleSpine surgery and related research2018

The Difference in Gender Affects the Pathogenesis of Ligamentum Flavum Hypertrophy.

Hiroyuki Takashima, Tsuneo Takebayashi, Mitsunori Yoshimoto, Maki Onodera, Izaya Ogon, Tomonori Morita, Noriyuki Iesato, Yoshinori Terashima, Katsumasa Tanimoto, Toshihiko Yamashita

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Article in Spine surgery and related research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.2field-weighted citation impact, top 49% 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

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 6 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

Hiroyuki TakashimaDivision of Radiology and Nuclear Medicine, Sapporo Medical University Hospital, Sapporo, Japan.
Tsuneo TakebayashiSapporo Maruyama Orthopaedic Surgery Hospital, Sapporo, Japan.
Mitsunori YoshimotoDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Maki OnoderaDepartment of Diagnostic Radiology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Izaya OgonDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Tomonori MoritaDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Noriyuki IesatoDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Yoshinori TerashimaDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Katsumasa TanimotoDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Toshihiko YamashitaDepartment of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan.
Sapporo Medical University · JPSapporo Medical University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionGender differences may play a role in the pathogenesis of lumbar spinal stenosis. However, few reports that discuss the effects of gender differences in ligamentum flavum (LF) hypertrophy have been published, and no study has investigated the relationship between LF thickness and the quantitative value of intervertebral disc (IVD) degeneration. This study aimed to investigate the impact of gender on the pathomechanisms underlying LF hypertrophy, focusing on the relationship among LF thickness, IVD degeneration, and age.

methodsThe subjects include 100 patients with low back pain and leg numbness, tingling, or pain. We measured LF thickness and the T2 values of IVDs using MR imaging and analyzed the relationship among LF thickness, T2 values of IVDs, and age. The interclass correlation coefficient (ICC) was calculated as the inter-rater reliability between the LF thickness values measured by two investigators.

resultsICC was calculated for the two measurements of LF thickness (r = 0.923, 95% CI: 0.907-0.936). No statistically significant difference in the T2 values of IVDs was observed between females and males from L2/3 to L5/S. There were significantly negative linear correlations between LF thickness and the T2 values of IVDs at all levels, but this correlation was not observed in females at L4/5. There were significantly negative linear correlations between age and the T2 values of IVDs from L2/3 to L5/S for all patients, females, and males (r = 0.422-0.756). In addition, there were significantly positive linear correlations between age and LF thickness from L2/3 to L4/5 for all patients (r = 0.329-0.361) and females (r = 0.411-0.481). Correlations were not observed for males at all levels or for all patients at L5/S.

conclusionsThe relationships identified among LF thickness, age, and IVD degeneration suggest that gender differences play a role in the pathogenesis of LF hypertrophy.

Indexed as

genderintervertebral disc degenerationLigamentum flavum hypertrophyT2 value

Identifiers

PMID31435532
PMCPMC6690110
OpenAlexW2795695344

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LicenceCC BY-NC-ND
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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.