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S3- Amputation And Prosthetics > UE Prosthetics > Flashcards

UE Prosthetics Flashcards

1
Q

Most UE amputees happen from ________ accidents or ________ injuries.

A
  • industrial

- combat

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2
Q
  • __% of congenital amputations are UE.

- __% of traumatic amputations are UE.

A
  • 60%

- 70%

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3
Q

If a UE amputation is due to cancer (CA), it will usually be /.

A

A/E (above elbow)

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4
Q

Is scar placement critical in UE amputations?

A

No, we don’t typically WB on arms.

-Stll important to have good scar mobility.

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5
Q

What are some levels of UE amputations?

A
  • Wrist disarticularion
  • Forearm (lose pro/sup) (as distal as possible)
  • Elbow disarticulation
  • Above Elbow (as distal as possible)
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6
Q

With UE amputations, the prosthetic arm may be left slightly shorter, why?

A

When the arm is hanging at the side, it tends to look longer because it is “lifeless”.

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7
Q

What are some bony landmarks to consider with UE amputees.

A
  • C7: harness ring below
  • Clavicle: site of breakdown
  • Acromion: to measure length of residuum
  • Scapula: need good mobility
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8
Q

Why is scapular mobility so important?

A

You have to have good mobility to operate tension of cable that operates the terminal device for the hand.

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9
Q

Why will amputees prefer a hook over a hand?

A
  • It is functional and durable.

- Can see through it to manipulate objects since they don’t have sensation.

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10
Q

With a B/E harness, by either moving the ______, or going into shoulder ________ or ________ they will create tension on the cable.

A
  • scapula

- shoulder flexion or abduction

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11
Q

What is a voluntary open device?

A

When tension is placed on the cable (flexion), it will put tension on the terminal device and open it.

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12
Q

B/E Harness System:

  • Shoulder flexion _______ cable and operates terminal device.
  • Shoulder extension ________ cable and closes terminal device.
  • Shoulder abduction augments ________.
A
  • tightens
  • relaxes
  • flexion
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13
Q

In A/E Harness Systems, the ____ cable will operate both the elbow and the terminal device.

A

same

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14
Q

With an A/E harness system, through a motion of shoulder _______, _________, and a little _________ they will lock the elbow.

A

depression, extension, a little abduction

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15
Q

What does a locking of the elbow do?

A

Allows any additional tension to be placed on the terminal device to open it.

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16
Q

With an A/E Harness System, the elbow must be ______ to operate the terminal device.

A

locked

17
Q

Myoelectric System will use ____ sensors. How does this work?

A

EMG

-Sensors in the prosthetic will act on muscles that are left over and will act on the terminal device.

18
Q

With the Myoelectric System, typically ______ will close the hand and _______ will open the hand.

A
  • flexors

- extensors

19
Q

What are some problems with the Myoelectric System?

A
  • heavy
  • make noise
  • breaks
  • needs to be charged
20
Q

Myoelectric system is suspended through what systems?

A
  • Pin and lock
  • Suction
  • Supracondylar
21
Q

If there is damage to the forearm muscles, what can be done?

A

Electrodes can be imiplanted in chest or back as well.

22
Q

On The Horizon Devices

A
  • Independent Finger Motion
  • Targeted Muscle Reinnervation
  • Osseointegration
  • Neural Prosthesis Interfaces
23
Q

1

A

1

24
Q

1

A

1

25
Q

Targeted Muscle Reinnervation provides more intuitive control. How is this done?

A

Nerves from the brachial plexus in residuum are transferred to target mm that no longer perform function. Augments signal to muscle for easier and enhanced prosthetic control.

26
Q

With Targeted Muscle Reinnervation, nerves grow into new target tissue and this enhances _______ of the myoelectric arm.

A

control

27
Q

Targeted Muscle Reinnervation is only for ________ disarticulation or __________.

A
  • shoulder

- transhumeral

28
Q

Osseointegration involves __ surgeries __ months apart.

A

2 surgeries 6 months apart

29
Q

What is the idea behind Neural Prosthesis Interfaces?

A

Taking signals from the brain, and through a neural interface and processing unit, they take what you are thinking and send it to the terminal device.

30
Q

With Neural Prosthesis Interfaces we can get ________ control as well as feed-forward control.

A
  • Feedback, other prosthesis can’t do this.

- Example is if something is slipping in hand, sensation of that goes to the brain and tells the hand to close tighter.

S3- Amputation And Prosthetics (10 decks)

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