NDLI: Progression and risk factors of hallux valgus angle in elite adolescent dancers: a cohort study

Content Provider	Springer Nature : BioMed Central
Author	Liu, Zijian Chen, Shuo Okunuki, Takumi Yabiku, Hiroki Hoshiba, Takuma Maemichi, Toshihiro Li, Yanshu Zhao, Hanye Kumai, Tsukasa
Abstract	Introduction To the best of our knowledge, no previous studies have linked the progression of hallux valgus (HV) with plantar pressure distribution. Therefore, this study aimed to determine the progression of HV angle in elite adolescent dancers and evaluate the risk factors associated with foot plantar pressure during demi-pointe movement. Methods For this cohort study, 40 adolescent dancesport dancers (age: 14.5 ± 1.3 years; height: 168.3 ± 8.3 cm; weight: 52.4 ± 8.1 kg) were recruited from a dancesport specialty school. All participants reported no foot or lower limb injuries or symptoms in the past year and were not undergoing any rehabilitation or medication treatment. The HV angle was measured by photography (HVAp). The HVAp survey included baseline and follow-up assessments after 1 year. Foot plantar pressures (kPa) were obtained using the F-Scan measurement system (Tekscan, Tokyo, Japan), and the data were divided into two categories based on the foot location (type 1: hallux, toe, and metatarsophalangeal [MTP] joint area and type 2: medial, middle, and lateral areas). Data were analyzed using the Pearson’s chi-square test and multiple logistic regression. Results The HVAp measurement demonstrated excellent reliability. A significant increase of 2.1° ± 3.5° in the HV angle of elite adolescent dancers was found at the 1-year follow-up assessment relative to that at baseline. There were significant correlations between the HVAp variation values and the hallux (r = − 0.480, P = 0.002), toe (r = − 0.313, P = 0.049), and MTP joint area (r = 0.446, P = 0.004) plantar pressure percentages in the type 1 category and medial area (r = − 0.331, P = 0.037) and middle area (r = 0.386, P = 0.014) pressure percentages in the type 2 category. Based on the multivariate logistic regression analysis, the HVAp variation values were associated with foot plantar pressure in the hallux (odds ratio [OR]: − 0.12, 95% confidence interval [CI]: − 0.191 to − 0.048, P = 0.002) and middle areas (OR: 0.09, 95% CI: 0.019 – 0.161, and P = 0.014) from the two categories, respectively. Conclusion This study demonstrated significant progression of the HV angle in elite adolescent dancers over 1 year, which was significantly associated with increased foot plantar pressure in the middle area and decreased plantar pressure in the hallux area. These findings highlight the importance of monitoring and addressing foot plantar pressure in adolescent dancers.
Related Links	https://bmcmusculoskeletdisord.biomedcentral.com/counter/pdf/10.1186/s12891-024-08005-9.pdf
Ending Page	10
Page Count	10
Starting Page	1
File Format	HTM / HTML
ISSN	14712474
DOI	10.1186/s12891-024-08005-9
Journal	BMC Musculoskeletal Disorders
Issue Number	1
Volume Number	25
Language	English
Publisher	BioMed Central
Publisher Date	2024-11-30
Access Restriction	Open
Subject Keyword	Orthopedics Rehabilitation Rheumatology Sports Medicine Internal Medicine Epidemiology Hallux valgus Dancer Demi-pointe Foot plantar pressure
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Rheumatology
Journal Impact Factor	2.2/2023
5-Year Journal Impact Factor	2.6/2023

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