Posture (EXAM 1)

Question 1

Postural Control

Answer 1

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.

Question 2

Static Posture

Answer 2

Standing, lying or sitting

Question 3

Dynamic Posture

Answer 3

• Include postures in which the body and/or its segments are moving.
• I.e.- walking, running, jumping, throwing, and lifting

Question 4

Ideal Standing Posture (Lateral View)

Answer 4

• Mastoid process
• Bisects shoulder joint
• Bisects the greater trochanter
• Bisects knee, posterior to patella and dimple (just anterior to midline of knee
• Anterior to lateral malleolus about 1”

Question 5

Variables Affecting Control of Body Posture

Answer 5

Integrity of:

• CNS
• Visual system
• Vestibular system
• Musculoskeletal system
• Inputs from receptors in and around joints, tendons, and ligaments

Question 6

Ideal Standing Posture (Anterior View)

Answer 6

Upper body
- Mental symphysis
- Bisects sternum
- Bisects the symphysis
Lower body
- ASIS
- Knee
- Ankle
- Foot at the 2nd toe

Question 7

Ideal Standing Posture (Posterior View)

Answer 7

• Occipital protuberance
• Bisects spinous processes
• Bisects sacrum

Question 8

Perturnations

Answer 8

Strategies for handling perturbations in the sagittal plane:

• Ankle strategy
• Hip strategy
• Stepping pattern

Question 9

Ankle Strategy

Answer 9

Body will try to stabilize at the ankle joint before anything else

Question 10

Hip strategy

Question 11

Stepping Pattern

Answer 11

Stepping forward or backward in response to movements of the platform moves the body’s base of support so that it is under the body’s center of gravity.