Foot Muscle Cross-Sectional Area and Recurrent Falls: A Preliminary MRI-Based Evaluation.

Area of Science:

• Geriatric Medicine
• Radiology
• Orthopedics

Background:

• Foot muscle strength reduction is a common issue in older adults, contributing to falls.
• The relationship between foot muscle imaging characteristics and recurrent falls is not well understood.

Purpose of the Study:

• To investigate the association between foot muscle cross-sectional area (CSA), measured via MRI, and a history of recurrent falls in older adults.

Main Methods:

• A retrospective case-control study compared individuals aged 60+ with recurrent falls to age- and sex-matched controls.
• Foot muscle CSA was measured using MRI at the first tarsometatarsal joint.
• Multiple regression analysis was used, adjusting for confounding variables.

Main Results:

• Foot muscle CSA was significantly smaller in the recurrent fall group compared to controls (P=0.006).
• Decreased foot muscle CSA was independently associated with an increased likelihood of recurrent falls (OR=0.99, P=0.03).
• Excellent inter-rater agreement (ICC=0.92) was achieved for CSA measurements.

Conclusions:

• Reduced foot muscle CSA, quantifiable by MRI, may indicate an increased risk of falls in the elderly.
• This study demonstrates the feasibility of using quantitative MRI for fall-risk stratification in older adults.