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Prosthetics and Orthotics - Exam 1 > TT prosthesis components > Flashcards

TT prosthesis components Flashcards

1
Q

components of a TT prosthesis

A

interface

suspension

3S/Pin suspension

vacuum suction/expulsion valve

vacuum suction/elevate suction

suspension aids

foot/ankle assembly

articulated foot - ankle assembly

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2
Q

interface

A

liner/suspension

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3
Q

what is an interface

A

anything b/w the RL and the socket

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4
Q

interface fxn

A

distribute pressure

pad bony prominences

decrease friction

decrease shear force

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5
Q

which function of the interface is most important

A

decrease shear force

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6
Q

what could the interface be

A

liner or insert or could be part of suspension (part that holds the prosthesis on)

insert is not part of the suspension, could be for pressure distribution

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7
Q

liners or inserts

A

pelite/foam

silicon, gel, urethane characteristics

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8
Q

pelite/foam (liners or inserts)

A

not for suspension

insert or liner

inexpensive

compressible

does not reduce shear

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9
Q

silicon, gel, urethane characteristics

A

shock absorption

best at shear reduction

best at pressure distribution

often part of suspension

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10
Q

which liner/insert is the best of them all

A

silicon

closest to normal tissue

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11
Q

how is suspension rated

A

ability to prevent pistoning

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12
Q

what is pistoning

A

the distance the socket moves away from the RL when NWB

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13
Q

types of suspension

A

supracondylar cuff

thigh corset

rubber sleeve

suction suspension

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14
Q

supracondylar cuff –> design (suspension)

A

strap

suspends over femoral condyles

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15
Q

supracondylar cuff –> advantages (suspension)

A

small

no pressure on thigh

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16
Q

supracondylar cuff –> disadvantages (suspension)

A

fair suspension

not for obese patient

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17
Q

supracondylar cuff –> uses today (suspension)

A

sometimes auxillary strap

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18
Q

thigh corset –> design (suspension)

A

suspends around the thigh

orthotic knee joints w/ leather corset

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19
Q

thigh corset –> advantages (suspension)

A

larger area for suspension

used when can’t use condyles

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20
Q

thigh corset –> disadvantages (suspension)

A

heavy & bulky

poor cosmesis

encourages thigh atrophy

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21
Q

thigh corset –> uses today (suspension)

A

TKR

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22
Q

rubber sleeve suspension

A

replaced the thigh corset for most cases

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23
Q

rubber sleeve suspension –> design (suspension)

A

neoprene or elastic

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24
Q

rubber sleeve suspension –> advantages (suspension)

A

larger suspension area

inexpensive

easy to replace

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25
rubber sleeve suspension --> disadvantages (suspension)
rolls down/shape of thigh bulky fair suspension/pistoning
26
3S/pin suspension
uses a PTB socket
27
3S/pin suspension --> design (suspension)
silicon sleeve pin shuttle lock
28
silicon sleeve -->3S/pin suspension --> design (suspension)
adheres to the skin on RL secures leg to RL
29
pin --> 3S/pin suspension --> design (suspension)
attached to silicone sleeve goes into shuttle lock secures the sleeve to the prothesis
30
3S/ pin suspension --> advantages (suspension)
minimal pistoning no additional straps or buckles easier for patients with hand pathologies
31
3S/ pin suspension --> disadvantages (suspension)
some movement b/w sleeve and socket stretching of the sleeve
32
vacuum suction/expulsion valve
used w/ TSB socket
33
vacuum suction/expulsion valve --> design
negative pressure suction creates vacuum b/w the 2 sleeves
34
vacuum suction/expulsion valve --> 2 sleeves
outer and inner sleeve
35
outer sleeve --> vacuum suction/expulsion valve
connects to the prosthesis
36
inner sleeve -->vacuum suction/expulsion valve
connects to leg
37
vacuum w/ expulsion valve --> vacuum suction/expulsion valve
air pushed out one way valve
38
vacuum suspension/ elevated suction
harmony design system harmony triton
39
harmony design system --> vacuum suspension/ elevated suction
same as suction w/ expulsion, but expulsion valve except has pump to remove air vacuum b/w the 2 sleeves
40
harmony triton --> vacuum suspension/ elevated suction
pump built into the shank of the foot
41
vacuum suspension/ elevated suction --> advantages
high mm of mercury vacuum --> greater than vacuum suction excellent suspension
42
disadvantages --> vacuum suspension/ elevated suction
pump built into the shank of the foot
43
suspension aids
waist belt and fork strap
44
waist belt and fork strap
last resort for suspension used w/ another suspension system
45
foot/ankle assembly --> fxn
BOS motion adaptation propulsion
46
foot/ankle assembly --> normal range
3 planes of motion 10 degrees DF 25 degrees PF sup/pronation rotation
47
control --> foot/ankle assembly
greater the movement/greater control needed
48
articulated foot - ankle assembly
single axis multi-axis
49
single axis --> articulated foot and ankle assembly
15 degrees PF 5 degrees DF no ML movement anterior/DF bumpers posterior/PH bumpers
50
multi-axis --> articulated foot ankle assembly
A/P M/L transverse motion decrease torsion stress on RL/socket interference
51
articulated dynamic single axis foot
elation runway/freedom innovation computer bionic
52
elation --> articulated dynamic single axis foot
active k3 level adjustable ankle carbon fiber sacrifice dynamic response
53
what is the elation good for --> articulated dynamic single axis foot
transition from sneaker to high heels
54
runway/freedom innovation --> articulated dynamic single axis foot
active k3 level adjustable from a flat heel for sandals or walking button to adjust ankle angle
55
what is articulated dynamic single axis foot articulated w/
bumpers
56
computer bionic --> articulated dynamic single axis foot
k3-k4 ossur proprio foot BIOM
57
occur proprio foot --> articulated dynamic single axis foot
heavy, expensive many patients at k4 level will not use a computerized ankle
58
BIOM --> articulated dynamic single axis foot
motor driven must charge 4x a day expensive
59
what should we consider --> articulated dynamic single axis foot
weight fxn battery life price
60
articulated dynamic multi-axis
college park true step
61
college park true step --> articulated dynamic multi-axis
k3-4 carbon fiber bumpers lots of moving parts high dynamic response
62
non-articulated non-dynamic
SACH foot
63
SACH foot --> non-articulated non-dynamic
solid ankle cushioned heel K1 foot
64
SACH foot build --> non-articulated non-dynamic
wooden keel (heart) cushioned heel stimulates HS and FF toe break area
65
toe break area --> SACH --> non-articulated non-dynamic
MT heads PO area jxn keel cover
66
SACH foot --> advantages --> non-articulated non-dynamic
no moving parts movement thru cover inexpensive ML motion
67
SACH foot --> disadvantages --> non-articulated non-dynamic
poor push off poor gait COG drop (energy costing) ML motion
68
non - articulate dynamic
flex foot - axis flex walk ossur ceterus renegade freedom innovation ottobock harmony triton's flex sprint (cheetah)
69
flex foot - axia/flexwalk --> non-articulated dynamic
K2 - K3 recommend for long residual limbs, low moderate activity level lower profile
70
ossur ceterus is now called --> non-articulated dynamic
pro flex XC torsion K3-K4
71
pro flex XC torsion --> non-articulated dynamic
carbon fiber shock absorption rotation device sports (good for golfer)
72
renegade freedom innovation --> non-articulated dynamic
K3-K4 replace reflex VSP freedom innovation vertical shock deflection more popular than VSP
73
ottobock harmony triton's --> non-articulated dynamic
K3-K4 enhanced suction pump built in 3 carbon fiber springs
74
what is a ottobock harmony triton used w/ --> non-articulated dynamic
harmony suspension/elevated suction negative pressure elevated suction suspension
75
where does the ottoback harmony triton absorb energy --> non-articulated dynamic
at HS releases energy at PO
76
flex sprint is also called --> non-articulated dynamic
cheetah
77
cheetah --> non-articulated dynamic
carbon no heel component running foot
78
your pt wants a new foot for sprinting, which foot is most appropriate
cheetah
79
your pt tried a prosthetic foot that has an articulating ankle before and does not like them. however he likes the energy storing qualities of his previous foot. what foot would be the best choice for him?
flex foot

Prosthetics and Orthotics - Exam 1 (19 decks)

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