Posture Flashcards
Why is an infant’s upright posture limited?
Their postural reaction need to be perfected– need to get used to CoG being high above a small base of support
Spinal Curvature in neonate
Whole spine is flexed- forms “C” shaped curve (convex posteriorly)
What are the four curves of the spine?
Cervical = convex anteriorly Thoracic = convex posteriorly Lumbar = convex anteriorly Sacral = convex posteriorly
What happens to spine as we age?
shape of spine reverts back to C curve– cervical curve increases to keep eyes gazing ahead
LoG for normal posture
-countertorques? joint axes?
LoG close to joint axes with minimal countertorques
Plumb line/LoG for the ankle
- Ankle should be in neutral
- LoG should fall slightly anterior to lateral malleolus
- Ankle in a DF moment
- PF counteract this
Plumb line/LoG for knee
- Knee in full extension
- LoG anterior to knee AOR
- Extension moment
Sagittal plumb line for hip and pelvis
- Hip Neutral
- Pelvis Level
- LoG posterior to axis of hip joint
- LoG through greater troch
- Extension moment = posterior rotation of pelvis on femoral heads
LoG (plumb line) for lumbosacral and SIJ
- Through L5 body
- Slightly anterior to SIJ
- slight extension moment at L5/S1, opposed by ALL
LoG (plumb line) for head
LoG through external auditory meatus
- slightly anterior to AOR for flexion/extension
- flexion moment, counteracted by lig nuchae
LoG/Deviations when knee is flexed in standing
LoG will fall posterior to knee and be balanced by quads
LoG/ deviations in genu recurvatum
LoG anterior to knee joint, increases stress on fem condyles/tibial plateaus due to compression
What is lordosis?
Abnormal increase in anterior convexity
What is kyphosis?
Abnormal increase in posterior convexity
What type of curve in forward head posture? Does this compress anterior or posterior structures?
- increased lordotic curve
- compresses posterior structures since head is anterior from LoG
