TTA Flashcards
If pt has the ability or potential to use a prosthesis for transfer or ambulation on level surfaces at a fixed speed, they are considered what Medicare level?…
K1
If a pt has the ability/potential for ambulation with variable cadence (my have exercise beyond simple locomotion) they are — Medicare level
K3
If pt has ability/potential for ambulation on low level environmental barriers , their Medicaid level is a..
K2
“normal” TTA is..
20-50% of limb is spared
what part of a foot/ankle assembly determines the stability/mobility?
the KEEL length & material
3 energy storing feet/ankles:
- C-spring (i.e. Seattle foot)
- Deflection plate
- posterior leaf
Advantages/disadvantages of the SACH foot (NAR/NES):
adv: light weight, inexpensive, common, all sizes; simple STABLE, quiet, low maintenance, DURABLE
Disadv: very LMTD mvmt, NES
for a bariatric, inactive patient, what kind of ankle/foot assembly would be appropriate?
Heavy Duty NAR/NES for up to 350 pounds
what is the SAFE foot?
NAR/NES, more flexible than the SACH BUT Heavier & MORE EXPENSIVE than SACH
What is the Seattle foot? Is it better than the SACH/
NAR/ES; looks like an actual foot (yay!), heavier & costlier than the SACH BUT energy storing so depends on your purpose
What kind of energy storing prosthetic is prescribed for geriatric patients?
Seattle Lite Foot
What prosthetic foot has the highest mechanical energy return?
Deflection (90%) – but PLS also >90% nrg returning
How expensive are the deflection plate and Seattle foot as compared to the SACH?
2x as a expensive
what modification of the deflection plate allows for INV/EVR?
split toe and/or heel
the feet high heels is adjustable up to ..
2 inches
what is the only foot shown to reduce metabolic cost of walking?
PLS
What would be a helpful foot for an arthritic patient?
PLS reduces wear on knee joints in arthritic patients
in general, ankle joints’ disadvantages:
add weight and cost; also more complicated, less durable (bumpers and joints wear out) and noisy
what kind of AR/NES allows for increased knee stability? WHY?
single axis – allows for inclines/declines
what type of foot is useful on uneven terrain
AR/NES multiaxis
what produces greater GRF forces - AR or NAR?
articulating
what is the advantage of Proprio Foot applications?
Swing phase ankle DF
Remote foot adjustment
what kind of shank would you use for preschoolers ?
exoskeleton ( more durable!)
ideal socket material?
polypropylene - easy to clean, light, permanent
