TT 4 Flashcards
What are the two types of stability we talked about?
- alignment stability
- dynamic stability
What must stability be balanced with? Why?
- mobility
- need knee to bend for swing phase (clearance)
What is alignment stability driven by?
where components are positioned relative to TKA line
What is dynamic stability?
- How the amputee is able to control the residual limb
- Depends on muscle/strength
Categories of prosthetic feet
- static
- dynamic response
What are the static feet we talked about?
- SACH foot
- single axis
- multi-axis
- split keel foot
- flexible heel
SACH foot =
Solid
Ankle
Cushioned
Heel
Who uses a SACH foot?
lower level individuals
Single axis foot
- adds some basic articulation
- Doesn’t allow much DF before tibial advancement
Single axis foot: DF/PF bumpers
- Has DF stop and a PF bumper
- doesn’t need much anterior give
Who would use a single axis foot?
Someone who only needs it for walking
What is a multi-axis foot good for?
- allows M/L motion
- adapts to uneven terrain
Split keel foot
allows each side of the foot to move independently
Flexible keel
- runs almost entire length of foot
- flexible enough to allow toe break and simulate DF
Flexible keel: energy storage
does NOT store energy
STATIC
