Evidence map›Paper›PMID 40693861›Full record

ArticleAnnals of medicine2025

Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot.

Yu-Feng Liang, Xu-Song Li, Fang-Di Zha, Rong-Zhen Xie, Wei-Qiang Zhao, Fang-Yu Yi, Ming-Chao Yuan, Jie-Feng Huang

Abstract read
In one paragraph

Article in Annals of medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
–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 synthesis or guideline pooled it.

  1. Pooled it
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  3. Observational
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

8 authors.

Yu-Feng LiangDepartment of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.ORCID 0009-0006-3832-7289
Xu-Song LiDepartment of Orthopaedics & Traumatology, Zhongshan Hospital of Traditional Chinese Medicine, Zhongshan, Guangdong, China.
Fang-Di ZhaWenzhou Medical University, Wenzhou, Zhejiang, China.
Rong-Zhen XieDepartment of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
Wei-Qiang ZhaoDepartment of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
Fang-Yu YiHangzhou Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
Ming-Chao YuanThe First Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
Jie-Feng HuangDepartment of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.ORCID 0000-0002-1982-6641

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate the association between knee osteoarthritis (KOA) and the presence of hallux valgus and flat feet.

methodThis retrospective study analyzed KOA patients from January 2022 to March 2024, investigating the correlation between KOA and hallux valgus and flatfoot. The diagnosis of KOA and assessment of its symptoms were conducted using the diagnostic criteria and grading system established by the American College of Rheumatology, specifically the Kellgren-Lawrence (K-L) grading system and measurement of the femorotibial angle (FTA). Physical examination, weight-bearing X-ray examination and MRI evaluation of the knee were performed. Foot examination included weight-bearing and lateral X-ray imaging to determine the presence of hallux valgus and flat feet.

resultsA total of 168 patients met KOA criteria: 162 with genu varum, 6 with genu valgum and 39 with pes anserine tendinitis. Among those with genu varum, 145 had hallux valgus, 136 had flatfoot and 39 had pes anserine tendinitis. Gender distribution: 37 male (22.02%) and 131 female (77.98%). The mean age was 73.84 ± 4.96 years. Spearman correlation analysis showed significant associations between the severity of KOA (K-L grade) and hallux valgus (

conclusionThere was a significant correlation between KOA, hallux valgus and flatfoot. However, due to the study's cross-sectional design, causality cannot be established. There was also a significant link between knee varus and pes anserine bursitis.

Indexed as

FlatfootHallux ValgusOsteoarthritis, KneeAgedAged, 80 and overFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedRadiographyRetrospective StudiesWeight-Bearingflatfoothallux valgusK-L gradeKnee osteoarthritisknee varuspes anserine bursitis

Identifiers

PMID40693861
PMCPMC12284988

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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.