Navicular drop is negatively associated with flexor hallucis brevis thickness in community-dwelling older adults.

Background: Flatfoot is characterized as a lower longitudinal arch and is a common foot deformity in older adults. Foot intrinsic muscle dysfunction has been considered as one of the factors for a lower medial longitudinal arch. The objective of this study was to investigate the association of the navicular drop with the thickness of foot intrinsic muscles in older adults.

Associations of the step-up test and lower limb dysfunction: A post-hoc analysis of a prospective cohort study.

Background: Step-up ability is considered to be associated with lower limb dysfunction. The objective of this research was to assess the height of the tallest step that could be mounted and to investigate its association with lower limb dysfunction.

Methods: We previously conducted a two-year follow-up prospective cohort study.