COTA 1260 (Week 3) (Positioning, posture, and mobility) Flashcards
Base of support
Ability to maintain control over the position or movement of your body.
-The larger the distance between points of contact, the better the base of support and stability
-Mobility and walker add stability by increasing the base of support
Center of gravity (COG)
Focal point at which gravity acts and around which the weight of an object is evenly distributed
-Lower COG increases stability
-As weight distribution changes, the COG migrates in proportion to direction and placement
Line of gravity ( LOG)
Vertical line that extends from COG to ground
-Represents the downward force of gravity acting on the body
Equilibrium = balance
The wider the base of support about mass, the more stable the equilibrium
-Narrower the base of support to mass, the equilibrium is less stable
Standing posture
-Neutral alignment of the joints of the body
-Level pelvis supporting the natural curvature of the spine
Quiet standing
-Upper body vertically balanced above pelvis
-Supporting head, neck, and upper extremities
Postural sway
Small movements from side to side and front to back
Vertebral curves
Multiple joints create curves
-Gravity curves: Thoracic and sacral
-Anti-gravity curves: Cervical and lumbar
Scoliosis
-Curvature of the spine
-Can contribute to pelvic obliquity
Posterior pelvic tilt
Backward rotation of the pelvis out of neutral position
-Increases thoracic kyphosis and rounded back
Anterior pelvic tilt
The top of the pelvis tilts forward
-Increased lumbar lordosis and extension of the upper trunk
Pelvic obliquity
-Asymmetry of the pelvis in the frontal plane
-One side elevated relative to the other
Foward head posture
Protraction of the head and neck anterior to the trunk
Functional mobility
Moving from one position or place to another
-Bed mobility, wheelchair mobility, transfers
