Prosthetic Components & Design - feet Flashcards
1
Q
what foot goes with K1
A
SACH foot
2
Q
what foot goes with K2
A
single axis or multi-axial
3
Q
what foot goes with K3
A
multi-axial
4
Q
what foot goes with K4
A
hydraulic ankle, multiaxial, crossover
5
Q
SACH foot
A
- single axis, cushioned heel
- stiff, rigid = stable
- limited energy return
- wood block, rubber heel on top
6
Q
single axis
A
- has an articulating joint that provides PF and DF
- can PF quickly, providing foot flat at initial contact
- increases user confidence
- good for TFA
7
Q
multiaxial
A
- allows for PF, DF, inversion and eversion
- split toe designs can allows for uneven terrain
- very functional, good energy return
- spring = PF, DF
- split = inv., ev
8
Q
keel
A
- supportive structure of the prosthetic foot that provides stability to the user
- rigid, flexible or dynamic
- length is important to gait
9
Q
length of keel is important to gait, and has upstrem effects:
A
- toe lever
- heel rise/toe break
- knee flexion/stability
10
Q
types of prosthetic knees
A
single axis & polycentric
manual locking
pneumatic & hydraulic
microprocessor
11
Q
what is the goal of prosthetic knees
A
stance and swing phase control
12
Q
single axis and polycentric
A
- most basic knee type
- provide for stance control through alignment, encouraging the GRFV to be anterior to the prosthetic knee to ensure stability
13
Q
what does single axis and polycentric require
A
does not requre any additional components to maintain extension during stance, but does require active hip extension
14
Q
what phase of gait does single axis and polycentric not provide for
A
swing phase control
15
Q
manual locking
A
- most stable stance control knee
- does not allow for knee flexion during swing phase
- lock must be open for patient to sit
- K0-K1
