Influence of multiple sclerosis on dynamic gait stability

Area of Science:

• Neurology
• Biomechanics
• Gait Analysis

Background:

• Falls pose a significant health risk for individuals with multiple sclerosis (MS).
• Dynamic gait stability is a critical factor influencing fall risk in MS.
• Understanding MS-related gait impairments is crucial for developing fall prevention strategies.

Purpose of the Study:

• To compare dynamic gait stability between individuals with and without MS during level walking.
• To investigate the Feasible Stability Region framework in assessing gait stability in MS.
• To identify how MS impacts dynamic gait stability during different gait phases.

Main Methods:

• Twenty adults with MS and 25 healthy controls participated.
• Dynamic gait stability was assessed at touchdown and liftoff for both strong and weak sides.
• Spatiotemporal gait parameters (step time, length, frequency, foot landing angle) were analyzed.

Main Results:

• Individuals with MS demonstrated significantly lower dynamic gait stability compared to healthy controls.
• Slower gait speed in MS was a primary contributor to reduced stability.
• People with MS employed shorter step lengths to maintain stability, shifting their center of mass motion.

Conclusions:

• Multiple sclerosis impairs dynamic gait stability, increasing fall risk.
• Gait speed and step length are key modifiable factors affecting stability in MS.
• Findings offer insights into MS-related gait control and potential intervention targets.