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Amputations & Prosthetics > Random info > Flashcards

Random info Flashcards

1
Q

FFC rule of law

A

fit, function, cosmetics

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2
Q

3 overall goals in TT biomechanics

A
  • increased WB capacity of the residual limb
  • medial-lateral stabilization in stance phase
  • anterior-posterior knee control throughout stance phase
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3
Q

7 weight-tolerant areas in TT limb

A
  • patellar tendon
  • medial tibial flare
  • pre-tibial muscles
  • posterior distal aspect of the limb
  • popliteal fossa
  • fibular shaft
  • hydrostatic
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4
Q

how much lateral shift occurs at mid-stance?

A

about 1 cm

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5
Q

2 overall goals in AK (TF) biomechanics

A
  • achieving medial-lateral stability

- keeping knee stable throughout the stance phase

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6
Q

center of rotation in TF amputee

A

ischium

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7
Q

true or false? stabilized femur = stabilized pelvis?

A

true

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8
Q

does the varus moment production change after a TF amputation?

A

no, b/c the amputee bears most of his weight on the ischium which is considered the point or fulcrum about which the varus moment occurs

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9
Q

The _____ the varus moment, the _____ the lateral stabilizing force needed to oppose it. Therefore the _____ the force, the ______ the pressure on the femur.

A

greater; greater; greater; greater

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10
Q

there is a _____ relationship between functional ability and risk of injury

A

inverse

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11
Q

TKA line in front of the knee joint axis

A

inherently stable

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12
Q

TKA line through knee joint axis

A

less stable, but affords the wearer more voluntary control over knee function

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13
Q

how long is a temporary prosthesis worn?

A

4-12 weeks; average = 6 weeks

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14
Q

when is a first definitive prosthesis made?

A

18 months to 2 years

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15
Q

TT contracture limit (degrees)

A

> 30 hip flexion

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16
Q

TF contracture limit (degrees)

A

> 10 knee flexion

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17
Q

TT pressure tolerant areas

A
  • patellar tendon
  • shaft of fibula
  • DF m. lateral to tibial crest
  • tibial shaft medial to crest
  • popliteal space
  • PF m.
18
Q

TF pressure tolerant areas

A
  • ischial tuberosity

- gluteus max

19
Q

TT pressure sensitive areas

A
  • fibular head
  • tibial tubercle
  • tibial crest
  • cut ends of tibia and fibula
  • medial and lateral HS tendons
20
Q

TF pressure sensitive areas

A
  • cut ends of femur
  • pubic ramus
  • adductor longus
21
Q

TT componentry

A
  • foot/ankle
  • shank
  • socket
  • suspension
22
Q

foot/ankle types

A

articulated and non-articulated

23
Q

non-articulated foot/ankle types

A

SACH and dynamic response/energy storing

24
Q

SACH foot/ankle

A
  • wood keel
  • no motion
  • on un-level terrain torque is taken as RL interface
25
Q

dynamic response/energy storing foot/ankle

A
  • carbon graphite
  • flexible keel
  • torque is taken at foot
26
Q

articulated foot/ankle types

A
  • single axis
  • multi-axis
  • bionic
27
Q

single axis foot/ankle

A
  • PF/DF

- allows foot to maintain contact with ground

28
Q

multi-axis foot/ankle

A
  • some motion in all planes
29
Q

bionic foot/ankle

A
  • not for runners
30
Q

shank

A

wood, plastic, or metal pylon with foam rubber; endo- or exo-skeleton

31
Q

socket alignment

A

aligned on shank in slight flexion and lateral tilt

32
Q

socket types

A
  • PTB: uses liners (silicone, urethane, polyethylene) and socks
  • hydrostatic: total contact
33
Q

suspension types

A
  • supracondylar cuff (with forl strap or waist belt)
  • Supracondylar suspension with medial wedge (med/lat stability)
  • Supracondylar/suprapatellar suspension
  • Roll-on sleeve with locking pin
  • Thigh corset
34
Q

TF componentry

A
  • foot/ankle
  • shank
  • knee
  • socket
  • suspension
35
Q

knee types

A
  • axis
  • friction
  • extension aid
  • stabilizer
36
Q

axis knee

A

single or polycentric (4 bar linkage)

37
Q

friction knee

A
  • constant or variable
  • sliding
  • pneumatic
  • hydralic (provides more friction than pneumatic)
  • bionic
38
Q

stabilizer knee

A
  • manual lock

- friction break (high friction during early stance)

39
Q

socket types

A
  • *pre-flexed 10 degrees
  • quadrilateral (wider M/L)
  • ischial containment (wider A/P)
40
Q

suspension types

A
  • atmospheric

- mechanical

41
Q

atmospheric suspension

A
  • total suction

- partial suction

42
Q

mechanical suspension

A
  • silesian bandage or TES belt; hip joint with pelvic belt

Amputations & Prosthetics (6 decks)

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