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17 Cards in this Set

  • Front
  • Back
Advantages of carbon fiber feet
- stiff
- high weight/strength ratio
Biggest goal of socket design
eliminate pseudoarthrosis between socket and prosthesis; Think of socket interface as a joint
Main weight bearing area on patellar tendon bearing socket desing
* medial tibial flare
4 major categories of reasons for LE amputation
- Peripheral vascular disease 70-80%
- Trauma 20-25%
- Congenital
- Tumor
In transtibial amputation, tibial position in LR
In transtibial amputation, tibial position in terminal stance
How do you determine ground force reaction vector
connect center of pressure with just anterior to S1-2
Effect of heel position on knee flexion moment
posterior foot increases knee flexion moment
Effect of heel firmness on knee flexion moment
increased heel firmness increases knee flexion moment
4 common ways to try to deal with skin breakdown over patellar tendon
- move foot posteriorly
- use softer keel
- use shorter foot
- add ankle
Effect of keel firmness on knee extension moment
increased keel firmness increases knee extension moment
In transtibial ampuation varus angulation = socket _____
What should you assume about prosthetic knees and power
assume that a prosthetic knee has no power
What is the stability reference line?
- substitute for ground force reaction
- line from trochantor, knee, ankle
2 important patient factors in ability of AKA to stabilize knee
* hip extensor strength
- limb length (longer is easier)
The more _____ the knee the more stable
General energy requirements with more posterior knee
- less energy to stabilize
- more energy to initiate knee flexion