Prosthetic Feet Flashcards

1
Q

Non-Articulating SACH Foot

A
  • solid ankle cushioned heel
  • commonly prescribed
  • simple
  • low cost
  • no articulations
  • relies on cushioned heel to control initial to foot flat
  • best for level ground and limited community ambulators
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Articulating Design

SIngle Axis and Multiaxial Feet

A
  • foot that allows for plantar and DF via some mechanism of bumpers and an axis pin
  • stimulates actions of the gastroc/soleus and anterior tib
  • reduces flexion torque at the knee at initial contact
  • advantages
    • reduced torque on knee and therefore decreased pressure on residual limb
    • accommodates uneven terrain
  • Disadvantages
    • weight, mechanical complexity, noisy, cosmesis
  • Single Axis
    • primary advantage - able to reach foot flat position quickly in early stance
  • Multi Axis
    • gressinger foot
    • college park foot
    • endolite multiflex foot
    • advantage = foot can accomodate uneven terrain >1 plane
    • requires strength and regular maintenance
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Prosthetic Feet with Elastic Keel

SAFE Feet

A

Standard Attachment flexible endoskeletal = SAFE

  • advantage = smother gait pattern and higher functioning foot with less maintenance or weigh relative to articulated foot
  • disadvantage = may feel spongy to some and not stiff enough to active/athletic individuals
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Dynamic Response or Energy Storing Designs

Seattle Foot, Flex foot

A

Seattle

  • released in early 1980s and was considered a dynamic response foot
  • absorb and store forces during loading and then release this energy during push off

Flex Foot

  • variations
  • good for engaging in high demand activities
  • more energy efficient
  • but have higher cost and not for weaker pt

Springlite foot

  • dynamic response foot
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Energy Return Percentages

A
  • SACH = 0%
  • Seattle = 70%
  • Flex = 90%
  • Human = 260%
How well did you know this?
1
Not at all
2
3
4
5
Perfectly