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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
Q

What is the stance control and swing mobility in single axis knee

A

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
Q

Weight-Activated Stance control knee has ___ axis

A

single

27
Q

single axis knees have __ stance control

A

no

28
Q

how does weight-activated knees have stance control and swing moblity?

A

stance: WB (no WB you buckle) even if its not straight
swing” extension assist by lifting into hip flexion

29
Q

What K level is weight-activate stance control

A

K1 or 2

30
Q

How does polycentric knee work for stance control and swing mobility

A

stance: axis moves posterior
swing: axis moves superior and has extension assist

31
Q

why does the polycentric axis move superior and/or posterior

A

superior for limb clearance and posterior to create extension moment for stance

32
Q

What K levels typically have an extension assit?

A

K1 or 2

33
Q

What K level is polycentric knee?

A

K1 or 2

34
Q

Are any of the K1 or 2 knees cadence responsive?

A

no

35
Q

How does the piston design work with a hydraulic or pneumatic knee?

A

piston moves up and down and resists against air (pneumatic) or water (hydraulic)

36
Q

What K level is hydraulic/pneumatic knee? is it cadence responsive?

A

K3
Yes

37
Q

How is stance control and swing mobility with hydraulic/pneumatic knee?

A

stance: more resistance against piston pressures down
swing: less resistance allows swing

38
Q

What are some cons to the hydraulic/pneumatic knee

A

temperature can change effectiveness (water can freeze making it stiff)
maintenance

39
Q

A microprocessor knee is what K level? is it cadence responsive?

A

K3 or 4
yes

40
Q

how does the microprocessor control stance and swing

A

computer control piston which works both stance and swing

41
Q

how does the myoelectric prosthesis work

A

EMG pads on certain muscles to fire and get motion

42
Q

What does the rotator do?

A

torque/turn positions

43
Q

What are shock absorbers for?

A

high activity, uneven terrain

44
Q

What kind of suspension?

A

TES total elastic suspension

45
Q

What kind of suspension?

A

parachute

46
Q

What is the goal for stairs with a microprocessor knee

A

step-to going up
step over step going down

47
Q

If a person has weak glutes how should the single axis knee be adjusted?

A

more posterior to get more stable extension

48
Q

what is the relationship between limb length and strength

A

shorter limb = weaker hip extensors

49
Q

How is this TKA line effecting the knee joint?

A

the knee joint is anterior to the TKA line, if it is too far forward, they will buckle

50
Q

How is the TKA line effecting the knee joint?

A

the knee joint is posterior to the TKA line so they are more stable

51
Q

How is the TKA line going to be the most efficient?

A

if it goes right through the middle of the knee joint

52
Q

What is bench alignment?

A

socket 5 degrees of hip flexion
hip adducted for narrow BoS
TKA line based on strength/length of residual limb

53
Q

What is pistoning? What can cause it?

A

Socket comes out during swing and pushed back in place during stance.
caused by edema/shrinkage of RL, wrong # of ply

54
Q

do you want the hip to be extended or flexed during IC/LR? Why?

A

extended because if it was flexed you can’t use glutes to control knee as well

55
Q

What kind of pelvic motion is ideal at terminal stance? Why?

A

forward/anterior rotation to get knee set for swing

56
Q

If the socket is tilted to neutral or anterior what happens?

A

extension

57
Q

What happens if the socket is tilted posterior beyond 10 degrees

A

buckle?

Mod 2 (4 decks)

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