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MSK 2 (F22) > Prosthetics Amputations > Flashcards

Prosthetics Amputations Flashcards

1
Q

Describe K0 and what prosthetics are recommended?

A

No potential to ambulate/transfer. Bedbound.
No prosthetic.

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2
Q

Describe K1 and what prosthetics are recommended?

A

Ambulate level surfaces. Limited household amb.
Manual lock or stance control knee
SACH or single axis foot

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3
Q

Describe K2 and what prosthetics are recommended?

A

Ambulate some environmental barriers. Limited community amb.
Pneumatic or polycentric knee
Multi axis foot

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4
Q

Describe K3 and what prosthetics are recommended?

A

Community amb.
Hydraulic or microprocessor knee
Energy storing foot

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5
Q

Describe K4 and what prosthetics are recommended?

A

Ability for participation that exceeds basic ambulation. Child, athlete.
Hydraulic or microprocessor knee
Energy storing foot
High-activity knee frame

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6
Q

Mortality rate for unilateral BKA

A

30 days = 17%
1 year = 35%
5 years = 75%

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7
Q

Mortality rate for unilateral AKA

A

30 days = 27%
1 year = 54%
5 years = 77%

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8
Q

Mortality rate for multiple major amputation

A

30 days = 23%
1 year = 45%
5 years = 80%

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9
Q

Energy Consumption: unilateral BKA (2 different % from each lecture)

A

10-20%
23%

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10
Q

Energy Consumption: unilateral AKA (2 different % from each lecture)

A

60-70%
99%

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11
Q

Energy Consumption: bilateral BKA (2 different % from each lecture)

A

20-40%
41%

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12
Q

Energy Consumption: bilateral AKA

A

> 200%

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13
Q

WB areas for PTB Sockets (for BKA)

A

Pat tdn
Pretibial muscle mass
Lateral fibula
Popliteal fossa

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14
Q

WB areas for trans-femoral sockets

A

Isch Tub
Glut muscles
Lateral thigh

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15
Q

Foot Slap causes

A

Soft PF bumper (soft heel)

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16
Q

Foot ER at Heel Strike causes

A

Heel too firm.

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17
Q

Knee Instability correction

A

Decrease degree of DF.
Decrease anterior translation of socket.

18
Q

Knee Hyperext causes

A

Heel cushion too soft.
Heel/toe lever too long or too firm.

19
Q

Excessive Varus causes

A

Too much inset.
Hypermobile LCL

20
Q

Excessive Valgus causes

A

Insufficient inset.
Hypermobile MCL

21
Q

Socket ABD/Add causes

A

ABD: walking on lat side of foot.
Add: walking on med side of foot.
Due to degree of ankle inversion/eversion.

22
Q

Drop Off looks like

A

Sudden knee flex in late stance phase

23
Q

Drop Off causes

A

Heel/toe lever too soft or too short.
Heel height too high.
Prosthetic too short.

24
Q

Vaulting looks like

A

Excess PF on non-prosthetic side to clear prosthetic limb.

25
Q

Vaulting causes

A

Prosthetic too long

26
Q

Pistoning looks like

A

Tibia moves vertical during WB vs NWB phases.

27
Q

Pistoning causes

A

Socket too big.
Not wearing enough socks.

28
Q

Excessive Hip ABD or Circumduction causes

A

Medial rim of socket too hight up, jams into skin.
Increased volume of residual limb.
Extreme knee flex resistance (not enough knee flex).

29
Q

Terminal Impact looks like

A

Audible clunk at end of terminal swing phase. Knee flings into extension.

30
Q

Terminal Impact causes

A

Inadequate knee ext resistance

31
Q

Unequal Step Length causes

A

Insufficient socket flexion (should be 5°).
Often associated w/ lumbar lordosis.

32
Q

Excess Pelvic Elevation (hip hiking) causes

A

Prosthesis too long, insufficient knee friction

33
Q

Medial Whip looks like

A

Heel moves closer to midline during toe-off.

34
Q

Medial Whip causes

A

Knee axis in excessive ER.
Prosthesis incorrectly donned in ER.

35
Q

Lateral Whip looks like

A

Heel flings out laterally at beginning of swing phase.

36
Q

Lateral Whip causes

A

Knee axis in excessive IR.
Prosthesis incorrectly donned in IR.

37
Q

Lateral Trunk Bending (toward prosthetic side) causes

A

Prosthetic foot excessively out-set.
Prosthetic too short.
Socket ABD.
Antalgic compensation for bone spur.
Weak hip ABD.

38
Q

Excessive Heel Rise causes

A

Inadequate knee flexion resistance

39
Q

Best suspension system for ML stability?

A

Joint thigh corset

40
Q

Which suspension systems offer no or limited ML stability? (3)

A

Cuff
Sleeve
Waist Belt

41
Q

Best suspension system for reducing pistoning? (4)

A

PTB-SP/SC
PTB-SC
Sleeve
Silicone + Pin

42
Q

Which suspension systems offer the most flexion ROM and limit shear forces? (2)

A

Silicone Suction
Silicone Vacuum

MSK 2 (F22) (17 decks)

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