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14 Cards in this Set
- Front
- Back
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Define Postural Control--
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refers to the person's ability to maintain stability of the body and body segments IN RESPONSE to forces that threaten to disturb the body's structural equilibrium.
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what are the 2 types of posture?
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static and dynamic
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what is static posture?
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standing, lying, or sitting
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what is dynamic posture?
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when body is moving. ex- walking, running, jumping, throwing, and liftin.
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what 4 things does the maintenance and control of body posture depend on?
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1- CNS (most important)
2- the visual system, 3- vestibular system 4- PNS (musculoskeletal system and inputs from receptors around the joints) |
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when we get rid of one system, what happens to the other systems?
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they get overloaded. Leads to sicknesses.
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the "ideal" standing posture:
from a lateral view, a line passes through the following 5 points indicating ideal alignment in posture: |
1- Mastoid process
2- bisects shoulder joint 3- bisects the greater trochanter 4- bisects knee, posterior to patela and dimple (just anterior to midline of knee) 5- Anterior to lateral malleolus about 1 inch |
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which point usually gets out if line the most as we age?
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the mastoid process
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the standard for the lower extremities from the anterior view passes through following 4 points:
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1- Anterior superior Iliac spine (sticks out of hip)
2- knee 3- ankle 4- foot at the 2nd toe-has no plantar interocity. |
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if a plumb line is set between the two scapulae, the standard for the anterior/posterior view will bisect the body into equal right and left havles. Where will this line go through?
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Anterior View:
Mental symphysis Bisects sternum symphysis pubis Posterior View: Occipital protuberance Spinous processes sacrum |
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what are the 3 strategies that occur in response to perturbations of standing postures?
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1- ankle strategy
2- hip strategy 3- stepping pattern |
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when the ankle and hip patterns are insufficient to bring and maintain the line of gravity over the base of support, what happens?
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the stepping pattern occurs.
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what does stepping forward or backward help?
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it moves the body's base of support so that it is under the body's center of gravity.
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where is the center of gravity of the body generally considered to be?
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around S1 and S2.
but of course variation occurs in body type, etc. |
