11.2 Trans-tibial 2 Flashcards

1
Q

Suspension types

A
  • Supracondylar
  • Suprapatellar
  • Thigh corset and joint
  • Sleeve
  • Locking liner
  • Cuff strap
  • Waist belt
  • Pin and shuttle
  • Suction
  • Vacuum assisted
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2
Q

How does the supracondylar suspension work?

A

Comes up high over the knee and grabs onto the sides of the femoral condyles

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3
Q

Supracondylar suspension provides ___ support

A

M/L

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4
Q

How might the supracondylar suspension get past the condyles?

A
  • May have removable medial wall that reattaches

- Pad built into a flexible liner

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5
Q

Suprapatellar suspension

A
  • Similar to supracondylar, but anterior trim line comes over patella
  • Has a quadriceps bar
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6
Q

Components of a thigh corset and joint

A
  • metal joint
  • corset at top
  • socket at bottom
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7
Q

advantages to thigh corset and joint

A
  • M/L stability
  • Leather has some rigidity and can absorb some of the compressive forces on the residual limb
  • Good for short residual limb
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8
Q

Why would a corset and joint be good for a short residual limb?

A
  • Doesn’t have a lot of surface to take weight

- Provides better dispersion of forces and stability

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9
Q

Sleeves are made of

A

neoprene

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10
Q

Sleeves go on the (inside/outside)

A

outside

Person puts on socket, then folds over their leg

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11
Q

What is a locking liner?

A

Liner is locked into the socket from the bottom

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12
Q

Does the cuff strap provide M/L stability?

A

no

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13
Q

Benefits to using a cuff strap suspension

A

Difficult to use a supracondylar suspension if they have excessive redundant tissue

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14
Q

Who typically gets a waist belt?

A
  • low functioning people (often elderly)

- may not be able to have any constriction at the knee

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15
Q

What makes up a pin and shuttle suspension?

A
  • ridged pin attaches to gel liner (same as locking liner)
  • receptacle for pin built into socket (clicks into place)
  • locked in until they push a release
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16
Q

Downsides to pin and shuttle suspension

A
  • All weight of the prosthesis is being suspended from distal end of limb when they go into swing
  • not good over time
17
Q

Solution to pin and shuttle problems?

A

suction

18
Q

What does suction combine?

A
  • gel liner

- externally applied suction

19
Q

suction: why is this effective?

A
  • Don’t have the same mechanical problems as with pin and shuttle
  • Limb hangs from more surface area of the residual limb
20
Q

How is vacuum assisted suspension different from suction?

A

air is pumped out with an external force

21
Q

Why would a pt with RA and impaired dexterity not want to use a vacuum assisted suspension?

A
  • have to attach pump

- requires more dexterity than just using something like a locking liner

22
Q

Why would a locking liner be best to use with an RA pt?

A
  • can roll on liner

- use gravity (WB on limb) to lock in place

23
Q

Which suspension types are not used very often?

A
  • corset and joint

- waist belt

24
Q

Which of these uses gel liner as the STANDARD?

  • supracondylar
  • pin and shuttle
  • corset and joint
  • waist belt
A

pin and shuttle