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Mod 2 > Amputation (TF) > Flashcards

Amputation (TF) Flashcards

1
Q

What kind of knee and foot are usually on the IPOP?

A

weight activated knee
SACH foot

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2
Q

What kind of prosthesis?

A

IPOP

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3
Q

What are benefits to IPOP

A

early WBing and balance

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4
Q

A-P and M-L control in Quad socket

A

A-P: sits ITs on posterior seat
no M/L control

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5
Q

What gait deviation can occur with no M/L control on the quad socket

A

Trendelenburg

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6
Q

What kind of socket?

A

Quad

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7
Q

What is contained in the IRC socket

A

ischium
pubic ramus
femur

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8
Q

What is the A-P and M-L stability in the IRC?

A

M-L: bony lock (controls pelvis)
A-P: high anterior/posterior brim

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9
Q

What is the M-L control in sub-ischial socket prevent trendelenburg

A

vacuum/suction

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10
Q
A

Sub-Ischial socket

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11
Q

What are the 2 types socket constructions

A

hard socket or flexible in frame

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12
Q

What are the options for interface?

A

socks
liner
without socks

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13
Q

What K level will have cadence responsive knee

A

K3

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14
Q

What muscle is going to control knee?

A

Glutes

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15
Q

What is an extension assist

A

in trailing limb position the knee springs out to extend

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16
Q

What K level is a manual locking knee?

A

K1

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17
Q

Manual locking knee has a ___ hinge and ___ axis

A

simple
single

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18
Q

manual locking knee __ when upright and __ to sit

A

locks
unlocks to sit

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19
Q

Manual locking knee:
stance control:
swing mobility:

A

stance: good its literally locked
swing: none

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20
Q

What kind of knee?

A

manual locking

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21
Q

Single axis/constant friction knee is what K-level

A

K1 or 2

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22
Q

Single-axis/constant friction knee has a __ hinge and __ shank speed

A

simple
specific

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23
Q

more friction in knee =
less friction in knee =

A

more slower through swing
more fast

24
Q

What gait problem might happen if there is too much friction?

A

IC is not timed right, foot hit ground before ready too, tibia is behind you

25
What is the stance control and swing mobility in single axis knee
stance: none, the knee will be put posterior to weight line creating an extension moment swing: hip flexion to help get constant friction through swing
26
Weight-Activated Stance control knee has ___ axis
single
27
single axis knees have __ stance control
no
28
how does weight-activated knees have stance control and swing moblity?
stance: WB (no WB you buckle) even if its not straight swing" extension assist by lifting into hip flexion
29
What K level is weight-activate stance control
K1 or 2
30
How does polycentric knee work for stance control and swing mobility
stance: axis moves posterior swing: axis moves superior and has extension assist
31
why does the polycentric axis move superior and/or posterior
superior for limb clearance and posterior to create extension moment for stance
32
What K levels typically have an extension assit?
K1 or 2
33
What K level is polycentric knee?
K1 or 2
34
Are any of the K1 or 2 knees cadence responsive?
no
35
How does the piston design work with a hydraulic or pneumatic knee?
piston moves up and down and resists against air (pneumatic) or water (hydraulic)
36
What K level is hydraulic/pneumatic knee? is it cadence responsive?
K3 Yes
37
How is stance control and swing mobility with hydraulic/pneumatic knee?
stance: more resistance against piston pressures down swing: less resistance allows swing
38
What are some cons to the hydraulic/pneumatic knee
temperature can change effectiveness (water can freeze making it stiff) maintenance
39
A microprocessor knee is what K level? is it cadence responsive?
K3 or 4 yes
40
how does the microprocessor control stance and swing
computer control piston which works both stance and swing
41
how does the myoelectric prosthesis work
EMG pads on certain muscles to fire and get motion
42
What does the rotator do?
torque/turn positions
43
What are shock absorbers for?
high activity, uneven terrain
44
What kind of suspension?
TES total elastic suspension
45
What kind of suspension?
parachute
46
What is the goal for stairs with a microprocessor knee
step-to going up step over step going down
47
If a person has weak glutes how should the single axis knee be adjusted?
more posterior to get more stable extension
48
what is the relationship between limb length and strength
shorter limb = weaker hip extensors
49
How is this TKA line effecting the knee joint?
the knee joint is anterior to the TKA line, if it is too far forward, they will buckle
50
How is the TKA line effecting the knee joint?
the knee joint is posterior to the TKA line so they are more stable
51
How is the TKA line going to be the most efficient?
if it goes right through the middle of the knee joint
52
What is bench alignment?
socket 5 degrees of hip flexion hip adducted for narrow BoS TKA line based on strength/length of residual limb
53
What is pistoning? What can cause it?
Socket comes out during swing and pushed back in place during stance. caused by edema/shrinkage of RL, wrong # of ply
54
do you want the hip to be extended or flexed during IC/LR? Why?
extended because if it was flexed you can't use glutes to control knee as well
55
What kind of pelvic motion is ideal at terminal stance? Why?
forward/anterior rotation to get knee set for swing
56
If the socket is tilted to neutral or anterior what happens?
extension
57
What happens if the socket is tilted posterior beyond 10 degrees
buckle?

Mod 2 (4 decks)

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