Sway
Sway
Sway (/sweɪ/) is a term often used in the medical field to describe a type of movement or motion. It is commonly associated with balance and postural stability, particularly in the context of neurological or musculoskeletal conditions.
Etymology
The term 'sway' originates from the Old Norse word 'sveigja', which means to bend, swing, or give way.
Definition
In a medical context, sway refers to the horizontal or vertical movement of the center of gravity within the base of support. This is a natural occurrence when a person is standing or walking, but excessive or uncontrolled sway can be indicative of a balance or gait disorder.
Related Terms
- Postural Stability: This is the ability to maintain an upright position without falling over. Sway is a key component of postural stability.
- Gait: This refers to the pattern of movement of the limbs during locomotion. Sway can affect gait, particularly in individuals with neurological or musculoskeletal conditions.
- Balance: This is the ability to maintain the body's center of gravity within its base of support. Sway is a natural part of balance, but excessive sway can indicate a balance disorder.
- Neurological Disorders: These are diseases of the nervous system. Many neurological disorders can affect sway, including Parkinson's disease, Multiple Sclerosis, and Stroke.
- Musculoskeletal Disorders: These are diseases that affect the muscles, bones, and joints. Conditions such as Osteoarthritis, Rheumatoid Arthritis, and Osteoporosis can lead to increased sway.
External links
- Medical encyclopedia article on Sway
- Wikipedia's article - Sway
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