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Acute Care Module 4 > Prosthetic Componentry > Flashcards

Prosthetic Componentry Flashcards

1
Q

what is the most common type of amputation

A

TTA

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2
Q

out of the approximately 185000 amputations per year, what comprises 54% and 45% of them respectively

A

vascular disease and trauma

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3
Q

what percentage of DM patients will require another amputation in 2-3 years

A

55% - typically on the contralateral limb

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4
Q

what is the 5 year mortality rate of amputees due to vascular disease

A

50%

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5
Q

what is the gold standard for immediate post operative care for an amputation

A

rigid removable dressing (RRD)

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6
Q

what are the three main functions of a ace wrap and shrinker

A

moves fluid out, shapes the limb, and desensitizes the RL

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7
Q

what are the five phases of prosthetics as defined by Jonas

A
  1. post op dressing
  2. evaluation and casting
  3. early prosthesis and gait training
  4. continue adjustments and training
  5. definitive prosthesis
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8
Q

what time is a good benchmark for prosthetic evaluation and gait activities

A

6 weeks

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9
Q

how is the cast made

A

plaster (historical), fiberglass, and CAD

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10
Q

what are the goals of a preparatory prosthesis (2)

A
  1. gets the patient ambulatory

2. made from adjustable components

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11
Q

describe K levels in terms of prosthetic components

A 
K0 - no prosthetic - wheelchair bound
K1 - most basic components
K2 - single speed ambulator
K3 - variable speed ambulator
K4 - advanced ambulator
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12
Q

what are the three categories of transtibial componentry

A
  1. socket and suspension
  2. shank/pylon
  3. foot and ankle
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13
Q

there are two categories of design for TTA sockets which are ____

A

total contact/total surface bearing and patellar tendon bearing

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14
Q

what are the four pressure tolerant areas

A

patellar tendon, pre tib area, medial tib, and popliteal

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15
Q

what are the three pressure intolerant areas

A

head of fib, distal tib, and tib tube

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16
Q

what is the most common type of suspension

A

mechanical - locking pin or lanyard

17
Q

what are three common liners

A

gel, silicone, and urethane

18
Q

what is the advantage but disadvantage of gel liners

A

the are most comfortable but break down quickly

19
Q

where does the sock go in relation to the liner or RL

A

sock goes outside of the liner - not in contact with RL

20
Q

when is a SACH foot most indicated

A

“solid ankle cushioned heel” for K0-1

21
Q

what is the advantage of a single axis foot over a SACH

A

it has one axis of rotation graded by bumpers to increase safety and stability

22
Q

what is the advantage of a hydraulic single axis foot over a single axis foot

A

increases control of DF/PF and improves energy return leading to decreased impact on the RL

23
Q

when is a flexible keel foot indicated

A

K2

24
Q

a patient is graded at K3 - what is an ideal foot ankle component for their prosthesis

A

ESAR aka flex foot - energy storage and return -

25
Q

what type of foot ankle prosthesis component allows for inversion and eversion

A

multiaxial foot

26
Q

what are the four categories of transfemoral componentry

A
  1. socket/suspension
  2. knee
  3. shank/pylon
  4. foot and ankle
27
Q

what is the most common type of socket design for transfemoral prostheses

A

ischial containment such as narrow M-L or CAT-CAM

28
Q

what is the most modern type of socket for transfemoral prostheses and what suspension is it commonly paired with

A

subischial with a elevated vacuum

29
Q

what are common categories of knees

A
  1. single axis constant friction
  2. polycentric constant friction
  3. single axis hydraulic/pneumatic
  4. polycentric hydraulic/pneumatic
  5. microprocessor
30
Q

what is the most basic knee

A

single axis constant friction

31
Q

what type of knee exhibits a shifting center of rotation primarily flexion/ext

A

polycentric constant friction

32
Q

a patient with a K3-4 will likely need which knee (minimum ideal)

A

single axis hydraulic/pneumatic

33
Q

what has higher than baseline energy expenditure - bilateral TTA or transfemoral

A

transfemoral

34
Q

how long are definitive prostheses designed to last

A

3-5 years

35
Q

what is verrucous hyperplasia

A

redness on distal end of RL without pressure due to patient not making contact with bottom of socket

Acute Care Module 4 (10 decks)

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