postural alignment Flashcards

1
Q

postural control

A

Controlling the bodys position in space for the dual purposes of stability and orientation (neurological basis of control = sensory, motor, and biomechanics)

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2
Q

postural orientation

A

ability to maintain an appropriate relationship between the body segments, and between the body and environment for a task (relationship posture and task)

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3
Q

postural alignment

A

biomechanical alignment

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4
Q

postural components

A

ability to control the center of mass in relationship to the base of support

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5
Q

center of mass

A

the point that is in the center of the body mass

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6
Q

base of support

A

area of the body that is in contact with the support surface

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7
Q

center of gravity

A

vertical projection of the COM

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8
Q

ideal postural alignement

A
  • controlling of the COM relative to the BOS
  • stable posture is the COM falling within the BOS
  • requires minimal effort
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9
Q

where is the COM in the body

A

anterior to S2

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10
Q
A
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11
Q
A
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12
Q

key point about the center of mass

A

is the NS controls the COM, it must be able to estimate the position of the COM from various sensory receptors

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13
Q

things to look for in the posterior view of a postural assessment

A
  • ear height
  • upper shoulder height
  • acromion height
  • lower t spine
  • humeral folds
  • pelvis height
  • PSIS
  • Varum or valgum
  • calcaneus with midfoot
  • spinous process
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14
Q

C7 level

A

just superior to the tip of the spine of the scapula

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15
Q

T3 level

A

at the same level as the medial tip of the spine of the scapula

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16
Q

T7 level

A

at the inferior angle of the scapula

17
Q

sagittal view landmarks

A
  • ear lobe
  • greater trochanter of the femur
  • anterior to center of knee joint
  • anterior to lateral malleolus
18
Q

muscles that are active during quiet stance

A
  • erector spinae
  • iliosoas
  • glute med
  • Abdominals
  • TFL
  • Gastroc
  • TA
19
Q

what does an increase in forward head posture increase

A

thoracic kyphosis

20
Q

upper cross

A

tight: upper traps and levator scap
weak: deep neck flexors
tight: pecs
weak: lower traps and serratus anterior

21
Q

anterior pelvic tilt force coupling

A

tight: iliopsoas, rectus femoris, erector spina
weak: gluteal maximus and abdominals

22
Q

posterior pelvic tilt force coupling

A

tight: hamstrings, glutes, rectus abdominas
weak: hip flexors, rectus femoris, and erector spina

23
Q

anterior pelvic tilt on lower back posture

A

lordotic back

24
Q

posterior pelvic tit on low back posture

25
forward shifted pelvis
swayback
26
major factors in dynamic postural control
- biomechanical alignment for static conditions - muscles groups need to work together and fire appropriately based on task - adaptations in COM, BOS, and COG
27
center of mass changes when walking
due to GRF
28
BOS changing with walking
dynamic with COM has a linear movement
29
LOG with walking
linear movement
30
key to walking
COM should always fall into the BOS
31
postural strategies
- means to adapt - unconscious neuromuscular patterns - similar to reflexes (respond to sensory input
32
ankle strategy
the first line of defence - use TA or Gastroc to control - seen in children at age 7
33
2 adult postural strategies
- stepping response - hip strategy