GAIT 1 Flashcards
definition of gait
The translatory progression of the body as a whole, produced by coordinated, rotatory movements of body segments
lower extremities support what % of body weight?
75% (head arms=25%, trunk=50%)
5 tasks of gait
- maintain HAT
- maintain upright posture/balance
- control foot trajectory for clearance
- generate mech energy for maintaining speed
- absorb mech energy for shock absorption/slowing down
1 year gait
high guard, fast gait
flat foot strike, short steps
more hip/knee flexion
170 spm
18 months gait
more natural, heel strike, arm swing
may run
2-3 year old gait
normal BOS
walk on tip toes, hop
7 year old gait
normal like adolts
adolescent gate
gait parameters stabilize once growth tapers
gait initiation from standing: initiates what muscles?
anterior tib
vastus lateralis (quad)
inhibit gastroc
*sagittal torque at ankles
what kind of torque is produced by shifting COP towards support limb by abducting swing hip during GAIT INITIATION
coronal torque
gait initiation lasts
0.64 seconds
1. sag torque at ankles
2. ant tib/vast lat activate
3. shift COP, abduct swing hip (coronal torque)
4. foot lifts off ground
What are phases of gait?
- IC
- LR
- mid stance
- terminal stance
- preswing
- initial swing
- mid swing
- terminal swing
2 periods of double limb support are
IC/LR, preswing
stance phase
60%
IC
LR
midstance
terminal stance
preswing
swing phase
40%
initial swing
midswing
terminal swing