Weak Toe Grip Strength Correlates with Hallux Valgus

NewsBot · Aug 13, 2016

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Weak TGS Correlates with Hallux Valgus in 10-12 Year Old Girls: A Cross Sectional
Study
Matsubara et al.,
Clin Res Foot Ankle 2016, 4:2

Objective: Hallux valgus is one of the most common foot deformities. It is considered that hallux valgus is
associated with foot arch height, footwear, sex and so on. Toe grip strength (TGS) is important for developing foot
posture because it attributes to foot arch height. The relationship between hallux valgus and TGS in children is
unknown, although childhood is a key period for developing foot posture. The objective of this study is to investigate
the relationship between hallux valgus angle (HVA) and TGS in children.
Methods: A total of 671 (1342 feet) 10-12 year old children (boys, n = 317, age = 10.3 ? 0.7; girls, n = 354, age =
10.2 ? 0.7; means ? standard deviation [SD]) participated in this study. HVA, the angle between the first metatarsal
axis and the proximal phalangeal axis, was measured using a goniometer. TGS was measured using a toe grip
dynamometer. Differences in the data between boys and girls were analyzed using the Mann-Whitney U test.
According to sex, single and multiple linear regression analyses with generalized estimating equations were
performed for the relationship between HVA and TGS. The level of statistical significance was set at p ˂ 0.05.
Results: The TGS and HVA of participants? feet were 13.3 ? 4.0 kg (boys, 13.4 ? 3.9 kg; girls, 13.1 ? 4.1 kg) and
7.9 ? 5.0? (boys, 6.7 ? 4.5?; girls, 9.2 ? 5.1?, p ˂ 0.001). The multiple linear regression analysis in girls indicated a
correlation between TGS and HVA (β = -0.098, p = 0.045), whereas in boys, there was no correlation.
Conclusions: HVA is greater in girls than in boys, and in girls, weak TGS correlates with hallux valgus. Weak
TGS may attribute to hallux valgus in potential stage or early stage. Strengthening TGS may be as promising tool for
preventing the onset of hallux valgus and for developing good foot posture.
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Admin2 · Aug 13, 2016

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Craig Payne · Aug 13, 2016

"Correlation" = chicken or egg

Also, is toe grip strength really weak or does the muscle just have a shorter lever arm due to HV? - if that is the case, then the muscles are probably stranger, but just measured as weaker due to the shorter lever arm.

NewsBot · Dec 10, 2020

Relationship between lower limb muscle strength and hallux valgus severity in older people
Mohammadreza Fotoohabadi et al
Foot (Edinb). 2020 Nov 23

Objective: To examine differences in lower limb muscle strength between older people with varying degrees of hallux valgus deformity.

Methods: Muscle strength was measured at the knee, ankle and foot using hand-held dynamometry and a clinical test of toe strength (the paper grip test) in 157 older people (99 women and 58 men) aged 65 to 91 (mean 74.1, SD 5.9) years. Hallux valgus severity was documented as none, mild, moderate or severe using validated photographs. Differences in muscle strength according to hallux valgus severity were evaluated using analysis of variance, adjusting for age. Paper grip test performance was compared across the hallux valgus severity groups using the chi-square (χ2) statistic.

Results: Knee extension, ankle joint dorsiflexion, ankle joint plantar flexion, ankle joint inversion, ankle joint eversion and lesser toe plantarflexion strength were not significantly different across the four hallux valgus severity groups. However, there was a significant, dose-response reduction in hallux plantarflexion strength with increasing severity of hallux valgus. This persisted after adjustment for age (F3 = 5.5, p = 0.001) with a medium effect size (partial η2 = 0.10). The number of participants who could successfully complete the paper grip test of the hallux significantly reduced across the four hallux valgus categories (χ2 = 18.5, p < 0.001).

Conclusions: There is a specific and progressive reduction in hallux plantarflexion strength with increasing severity of hallux valgus in older people. This finding has potential implications for both the aetiology and treatment of this common and disabling condition.
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