Evaluating the Function of the Foot Core System in the Elderly.

Area of Science:

• Biomechanics
• Gerontology
• Physiology

Background:

• The foot is crucial for postural control, relying on passive, active, and neural subsystems for motion and stability.
• Foot arch stability is essential for normal function, but abnormalities are common in the elderly, including muscle weakness and reduced sensory feedback.
• Existing evaluations often overlook the integrated function of these subsystems.

Purpose of the Study:

• To introduce a comprehensive approach for evaluating elderly foot function based on the foot core's passive, active, and neural subsystems.
• To provide insights into the functional interdependence of these subsystems for improved understanding of foot health in aging populations.

Main Methods:

• Assessed the active subsystem through intrinsic (doming strength test) and extrinsic (toe flexion strength test) muscle function.
• Evaluated the passive subsystem using the navicular drop test and foot posture index to assess foot arch function.
• Measured the neural subsystem by testing plantar tactile sensitivity (light touch and two-point discrimination) across nine foot regions.

Main Results:

• The study outlines a multi-faceted methodology for assessing the integrated components of the foot core system.
• Specific tests were applied to quantify muscle strength, foot posture, and sensory perception.
• This comprehensive evaluation provides a detailed picture of foot function.

Conclusions:

• A novel, integrated approach to evaluating foot core function has been presented.
• This methodology offers valuable insights into the functional status of the foot in the elderly.
• The findings can inform interventions aimed at improving balance and mobility in aging populations.