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Gait analysis
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Gait analysis is a systematic look at how a person moves while walking.
Walking is not a single action: it is a cycle that repeats. It has a stance phase, when the foot is on the ground bearing weight, and a swing phase, when the leg travels forward through the air. The legs take turns: while one leg travels through the air, the other holds the weight. And for that to work properly, two things have to happen at once: control coming down from the central nervous system, which is the brain and the spinal cord, and information coming up through the peripheral nervous system, the nerves that run to and from the rest of the body.
Knowing that sequence makes it possible to notice when it goes off track. One example is an antalgic gait, the walk of someone who spends little time bearing weight on one side: the stance phase is shortened relative to the swing phase.
In brief
Gait analysis is the systematic study of how the human body moves while walking.
Normal gait is a cycle with a stance phase and a swing phase: while one leg swings, the other bears weight, controlled by the central nervous system with feedback from the peripheral nervous system.
The legs take turns: while one leg travels through the air, the other holds the weight.
Watching that cycle makes it possible to spot deviations, such as an antalgic gait, in which the stance phase is shortened relative to the swing phase.
Sources (2)
- National Center for Biotechnology Information, StatPearls PublishingForensic Gait Analysis, StatPearlsPublished
- National Center for Biotechnology Information, StatPearls PublishingGait Disturbances, StatPearlsPublished
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