LECTURE 10: PROSTHETICS Flashcards

(46 cards)

1
Q

Educational requirements for prosthetics and orthotics

A

8ish years
undergrad, masters, at least 1 year residency (Baylor college of med is 18 mo) 2-4 years of post-grad
take a test, license

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2
Q

The most important part of any prosthesis is the

A

patient (motor)
*PT is the key to the motor

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3
Q

The ankle produces 240% energy. What about the typical prosthesis?

A

loses a few %

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4
Q

what is number one cause of amputation?

A

disease (PVD, diabetes, cancer) 75%

chronic conditions cause deconditioning, so different than trauma

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5
Q

3 main causes of amputation

A

-74% Disease
(PVD, diabetes, Cancer)
-23% trauma
-3% Congenital

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6
Q

_% of amputees will become bilateral

A

30-50%

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7
Q

save max limb length except in mid tarsal, long BK, long AK, metcarp, long AE.
Why?

A

areas where poor blood flow

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8
Q

What is the symes LLA?

A

symes: distal tibia, they can still bear weight on the bottom of tibia** (ankle)

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9
Q

___◦ Ideal 50%
tibial length for transtibial BKA

A

◦ Ideal 50%
tibial length
◦ 8cm below knee

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10
Q

transfemoral AKA:
ideal -__% femur length ___ cm above distal femur

A

75% femur length
10 cm above distal femur

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11
Q

1.7 Amputees / ____ ppl

___% are TransTibial

___% are U.E.

___% are Males

A

 1.7 Amputees / 1000 people

 65% are TransTibial

 10% are U.E.

 70% are Males

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12
Q

bilateral trans tibial are more likely to be functional prosthetic user than unilateral trans femoral; T or F

A

want to preserve knee!

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13
Q

___% of amputees over 60 yrs old discard their prosthesis in first 6 months. Why

A

50%
lack of transportation to attend all the visits, PT visits, etc.

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14
Q

energy expenditure
Trans Tibial %
Trans Femoral %
Bil Trans Tibial %
Bil. Trans Femoral %

A

need efficiency in gait
Trans Tibial 15-30%
Trans Femoral 40-65%
Bil Trans Tibial 125%
Bil. Trans Femoral 240% & up

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15
Q

who is involved in medical team for prosthetics?
 Patient/Family
 Physician
 Nursing
 Physical therapist
-____
-_____
-_____

A

 Occupational
therapist
 Prosthetist
 Social worker

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16
Q

can you use R leg prosthesis to use pedal and brakes

A

you can but need to get tested

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17
Q

prosthesis will cost between

A

$5000-200,000

*get social worker involved

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18
Q

post op treatment
(1-14 days)

A
  1. pre-hab
  2. crutch train, exercise, healing
  3. stump wrapping, shrinkers
  4. pain management
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19
Q

What are the common transfemoral AK contractures?

A

hip flexion
hip external rot
hip abduction

20
Q

transtibial BK common contractures

A

hip flexion
ER
hip abd
knee flexion

21
Q

in order to use prosthesis, you need a strong cocontraction of ___ and -___

A

quads AND hams (which get ignored often –> knee flexion exercises for transtibial

22
Q

transfemoral strengthening: emphasize ___

A

hip extension

23
Q

Geriatrics- emphasize ____

A

Geriatrics- emphasize balance

24
Q

What do you use early on before prosthetic while legs are healing for standing?

A

PPAM brackets

25
what qualifies you for prosthetic candidacy?
physical exam functional assessment outcome measures (to convince insurance)
26
What is the amputee mobility predictor?
amp pro amp no pro designed for PT to conduct, can you arise from chair, balance, etc. standard for getting prosthetics approved or changed
27
K modifier: level 0 on AMP
Does not have the ability or potential to ambulate or transfer safely with or without assistance and a prosthesis does not enhance their quality of life or mobility.
28
K modifier: level 1 on AMP
Has the ability of potential to use a prosthesis for transfers or ambulation on level surfaces at fixed cadence. SACH or Single axis foot single axis knee
29
K modifier: level 2 on AMP
Has the ability or potential for ambulation with the ability to traverse low level environmental barriers such as curbs, stairs, or uneven surfaces. Flexible keel foot, multi axis foot Safety knee, polycentric (4 bar) knee
30
K modifier: level 4 on AMP
can do beyond community (run, golf etc) qualify for anything
31
K modifier: level 3 on AMP
Has the ability or potential for ambulation with variable cadence.  Dynamic response foot  Hydraulic knee
32
what happens 21 days- 6 weeks?
 Prosthetic Fabrication  (4-6 Visits to Prosthetist)  Continue Home P.T. Program | also need vocational, financial, mental, nutritional support
33
what does 3 weeks-3 months of amputee care look like?
they have the prosthesis learn to use it with PT come back to OP to refine prosthesis | *good communication is important!
34
what happens between 3 months-2 years?
learn to master prosthesis deal with physical changes may need new socket, depending on how much change happened
35
Need a new leg every _____ years usually
3-5 years (kids: usually around every 2 years except growth spurts)
36
osseointegration is what?
Implanting man-made, load bearing devices directly into the bone, whereby the fixture bonds with the surrounding tissue. 3400 have been done in the world for amputees.
37
why is it good to get an OI? BENEFITS
don't have to wear a prosthetic socket! *no sweating or chafing, more hip ROM, more stability and fixation
38
potential adverse events of OI
#1: open wound for rest of life = INFECTION others: 2. peri-prosthetic fx 3. implant failure 4. granulation tissue formation 5. implant fatigue 6. soft tissue redundancy --> discomfort
39
What are grades of severity of infection (OI adverse event)
0: none 1: low grade soft tissue infection 2: high grade soft tissue infection 3: deep bone infection 4: septic implant failure
40
management of infections from OI
1. oral antibiotics 2. parenteral antibiotics 3. surgical intervention 4. implant removal
41
OI could be good for people with difficulty fitting into a socket. What kinds of people would be good candidates?
people who have socket difficulties due to: -skin grafting -scars -different bony abnormalities -short short residual limb
42
Does OI improve QOL, walking speed, energy cost?
yes! increased prosthetic use too
43
what is critical for OI trans tibial amputees?
ALIGNMENT! too much valgus or varus could damage knee ligaments
44
why are bilateral AKA amputees good candidates for OI/not great for sockets?
socket is too much (difficult, very hard to walk with all that material between legs)
45
true or false: OI fails 20% of the time
true *its a risk!
46
What is the future of OI in UE?
targeted mm re-innervation implantable electrodes pattern recognition sensory feedback | this was on shark tank!