A technique to evaluate foot function during the stance phase of gait

Area of Science:

• Biomechanics
• Orthopedics
• Gait Analysis

Background:

• Assessing foot function during gait is crucial for understanding lower limb biomechanics.
• Existing methods may lack the anatomical specificity needed for precise interpretation.
• Rheumatoid arthritis significantly impacts foot function and patient mobility.

Purpose of the Study:

• To present a novel three-dimensional (3D) technique for measuring foot function during the stance phase of gait.
• To highlight the advantages of using anatomically based coordinate systems for interpreting gait variables.
• To evaluate the technique's efficacy in differentiating pathological foot function in rheumatoid arthritis patients.

Main Methods:

• Employed a 3D motion analysis system with anatomically based segment coordinate systems.
• Measured ground reaction forces and center of pressure location.
• Expressed these variables within a local foot coordinate system for enhanced anatomical relevance.

Main Results:

• The technique provides a more anatomically meaningful interpretation of foot function variables.
• Demonstrated the ability to discriminate between normal and pathological foot function in rheumatoid arthritis cases.
• Successfully identified varying levels of functional impairment in patient cohorts.

Conclusions:

• The described 3D measurement technique offers a robust method for quantifying foot function during gait.
• Its application in rheumatoid arthritis highlights its clinical relevance for assessing pathology.
• This technique is poised to advance research on the impact of disease and treatment on foot biomechanics.