TF 1 Flashcards

1
Q

What are the types of TF sockets?

A
  • Quadrilateral

- Ischial containment (aka. Ischial containment narrow M/L)

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2
Q

The quadrilateral socket is analogous to this of the TT sockets

A

PTB (old standard)

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3
Q

Quadrilateral socket: where are the A/P trimlines located?

A

Below the ischial tuberosity

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4
Q

Weight bearing surface for quadrilateral sockets

A

All weight on ischial tuberosity

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5
Q

Dimensions of a quadrilateral socket

A
  • Wider M/L dimensions than A/P

- No tapering

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6
Q

How might a lack of tapering of the quadrilateral socket impact gait?

A
  • Glute med acts on femur

- Cannot stabilize the pelvis until the femur stops moving within the socket

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7
Q

What are the advantages of the ischial containment socket?

A
  • More intimate connection between femur and pelvis
  • Trimlines create more stability
  • Rotation control
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8
Q

How do amputees stabilize the limb?

A

By pressing to the lateral aspect of the socket

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9
Q

Why does the ischial containment socket create more stability during rotation?

A

Contoured around the muscle belly

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10
Q

What types of suspension are used for TF?

A
  • Traditional suction
  • Silicone liner
  • Lanyard
  • Active vacuum
  • TES Belt
  • Silesian Bandage
  • Pelvic belt and hip joint
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11
Q

Which type of socket is becoming more common with TF pts?

A

Active vacuum

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12
Q

Traditional suction suspension: How do you get all the flesh down into a tight socket?

A
  • pull sock

- pull leg in, then pull sock out

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13
Q

Traditional suction suspension: How does air get out?

A
  • one-way valve
  • allows air out but not in to maintain suction
  • uses a pull-sock
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14
Q

Indications for traditional suction sockets

A

Amputees with very stable volume of RL

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15
Q

Disadvantages of traditional suction suspension

A
  • need balance to don in standing

- doesn’t accommodate volume changes

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16
Q

Advantage to a traditional suction suspension

A
  • not typically a problem with skin

- suction prevents pistoning

17
Q

How does the silicone liner suspension work?

A
  • ring creates suction inside the limb (as opposed to skin)
  • may spray with alcohol to help slide in socket
  • takes multiple steps to evacuate air (one-way valve already in place)
18
Q

What might be used for silicone liner suspension if there is volume loss?

A

Sock strip to push the ring out farther

19
Q

What are the advantages to a silicone liner suspension?

A
  • requires less balance to don/doff

- can don in sitting, unlike traditional

20
Q

How does a lanyard suspension work?

A
  • strap fed through the bottom

- buckled on the side

21
Q

Pin and shuttle lanyard suspension benefits

A
  • more simple suspension type

- avoids mechanism malfunctioning

22
Q

Silicone liner with an active vacuum suspension

A

Has external vacuum applied to constantly pull air out

23
Q

TES belt

A

Total
Elastic
Sleeve

24
Q

When would TES belts be used?

A

May be used as an auxiliary suspension for someone who might want a pin and shuttle

25
What is a Silesian Bandage suspension?
- Goes from socket to opposite iliac crest and back down | - NOT around waist
26
Which suspension type is analogous to the knee joint and corset?
Pelvic belt and hip joint
27
What stability type is added with pelvic belt and hip joints?
Frontal plane