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

Objective To investigate the association between knee osteoarthritis (KOA) and the presence of hallux valgus and flat feet.Method This retrospective study analyzed KOA patients from January 2022 to March 2024, investigating the correlation between KOA and hallux valgus and flatfoot. The diagnosis of...

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Main Authors: Yu-Feng Liang, Xu-Song Li, Fang-Di Zha, Rong-Zhen Xie, Wei-Qiang Zhao, Fang-Yu Yi, Ming-Chao Yuan, Jie-Feng Huang
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Annals of Medicine
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Online Access:https://www.tandfonline.com/doi/10.1080/07853890.2025.2536213
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author Yu-Feng Liang
Xu-Song Li
Fang-Di Zha
Rong-Zhen Xie
Wei-Qiang Zhao
Fang-Yu Yi
Ming-Chao Yuan
Jie-Feng Huang
author_facet Yu-Feng Liang
Xu-Song Li
Fang-Di Zha
Rong-Zhen Xie
Wei-Qiang Zhao
Fang-Yu Yi
Ming-Chao Yuan
Jie-Feng Huang
author_sort Yu-Feng Liang
collection DOAJ
description Objective To investigate the association between knee osteoarthritis (KOA) and the presence of hallux valgus and flat feet.Method This 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.Results A 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 (r = 0.681, p < 0.05) and flatfoot (r = 0.689, p < 0.05).Conclusion There 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.
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spelling doaj-art-6259f2fc75ea4171ad4567a8a10484512025-08-20T02:50:22ZengTaylor & Francis GroupAnnals of Medicine0785-38901365-20602025-12-0157110.1080/07853890.2025.2536213Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfootYu-Feng Liang0Xu-Song Li1Fang-Di Zha2Rong-Zhen Xie3Wei-Qiang Zhao4Fang-Yu Yi5Ming-Chao Yuan6Jie-Feng Huang7Department of Orthopaedics &amp; Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, ChinaDepartment of Orthopaedics &amp; Traumatology, Zhongshan Hospital of Traditional Chinese Medicine, Zhongshan, Guangdong, ChinaWenzhou Medical University, Wenzhou, Zhejiang, ChinaDepartment of Orthopaedics &amp; Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, ChinaDepartment of Orthopaedics &amp; Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, ChinaHangzhou Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, ChinaThe First Clinical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, ChinaDepartment of Orthopaedics &amp; Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, ChinaObjective To investigate the association between knee osteoarthritis (KOA) and the presence of hallux valgus and flat feet.Method This 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.Results A 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 (r = 0.681, p < 0.05) and flatfoot (r = 0.689, p < 0.05).Conclusion There 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.https://www.tandfonline.com/doi/10.1080/07853890.2025.2536213Knee osteoarthritisflatfoothallux valguspes anserine bursitisK-L gradeknee varus
spellingShingle Yu-Feng Liang
Xu-Song Li
Fang-Di Zha
Rong-Zhen Xie
Wei-Qiang Zhao
Fang-Yu Yi
Ming-Chao Yuan
Jie-Feng Huang
Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot
Annals of Medicine
Knee osteoarthritis
flatfoot
hallux valgus
pes anserine bursitis
K-L grade
knee varus
title Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot
title_full Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot
title_fullStr Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot
title_full_unstemmed Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot
title_short Association between knee osteoarthritis and foot deformities: epidemiological analysis of hallux valgus and flatfoot
title_sort association between knee osteoarthritis and foot deformities epidemiological analysis of hallux valgus and flatfoot
topic Knee osteoarthritis
flatfoot
hallux valgus
pes anserine bursitis
K-L grade
knee varus
url https://www.tandfonline.com/doi/10.1080/07853890.2025.2536213
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