Q2: AFO - Alignment Case Studies Flashcards
1
Q
Prime determinant of gait
A
SVA
2
Q
Important Assumption of Ankle Angle
A
AFO is 90 degrees (0 heel to sole difference)
3
Q
When should the shank be inclined
A
Late stance
4
Q
When should the shank be reclined
A
Early stance
5
Q
Considerations for Normal Gait
A
- Segments always move forward
- Angular velocity of segments is not uniform
ex. tibia slows and femur accelerates
6
Q
What angle should the shank be at midstance
when knee is over middle of the foot
A
10-12 degrees inclination
7
Q
Shank at heel rocker
A
tibia reclined
8
Q
shank at the other 3 rockers
A
progressive inclination
9
Q
When is maximum knee extension?
A
40 % of gait cycle (terminal stance)
10
Q
What occurs at 50% of the gait cycle?
A
Hip - max. extension
Knee - extensions
Shank & Thigh - Inclined
Result = prerequesites step length
