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Lower Extremity Prosthetics III > Week 3 > Flashcards

Week 3 Flashcards

0
Q

What are the socket design goals?

A

Contouring for functioning muscles
Stabilize skeletal structures
Broad pressure over neuro-vascular bundles
Forces distributed over wide area

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1
Q

What are the gluteal region muscle compartments?

A 
Gluteus Maximus 
Gluteus medius 
Gluteus minimus 
Tensor fasciae latae 
6 deep lateral rotators
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2
Q

What are the characteristics of the quadrilateral socket design?

A

Four well defined walls
Rectangular in shape
Ischial-gluteal weight bearing

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3
Q

What are the characteristics of the ischial containment socket?

A

Femur help in adduction
Very intimate fit
Triangular shape

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4
Q

What are the advantages of the quadrilateral socket design?

A

Well documented

Consistent procedure for fabrication

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5
Q

What are the disadvantages of the quadrilateral socket design?

A

Not custom shape
Femur not held in adduction
Lack of support in medial wall

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6
Q

What are the advantages of the ischial containment socket?

A

Enhanced biomechanical stability
Increased medial wall support
Strong gluteal and hydrostatic loading
Restoration of pelvic-femoral angle

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7
Q

What are the disadvantages of the ischial containment socket?

A

Too many inconsistent designs

Requires skill to fabricate

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8
Q

Suction suspension is indicated for?

A 
Long limbs 
Stable volume 
Good skin integrity 
Good upper limb strength 
Majority of patients
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9
Q

What are the contraindications for suction suspension?

A

Patients with volume fluctuation
Short residual limbs
Severe scarring
Upper extremity involvement

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10
Q

Who is silicone suction indicated for?

A

Longer residual limbs
Stable limb volume (can add socks)
No upper limb involvement

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11
Q

What are the contraindications for silicone suction?

A

Unstable limb volume
Upper limb involvement
Skin sensitivity to material

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12
Q

What are the advantages of silicone suction?

A

Provides positive suction suspension
Does not limit range of motion
Reduces shear forces

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13
Q

What are the disadvantages of the silicone suction?

A

Difficult to don
Skin reaction to material
Rotation control

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14
Q

The True Silesian Belt has a double or single anterior attachment?

A

Double anterior attachment

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15
Q

Modified Silesian Belt has a double or single anterior attachment?

A

Single anterior attachment

16
Q

What are the indications of the Silesian Belt?

A 
Auxiliary suspension is required 
Rotational control needed 
When suction can't be used 
May aid in coronal control 
Patient security
17
Q

What are the contraindications of the Silesian belt?

A

When there is no need for frontal plane control (long limbs with good strength primary)

18
Q

What are the advantages of the Silesian belt?

A

Easy to don
May add coronal stability
Adjustable

19
Q

What are the disadvantages of the Silesian belt?

A

Increased straps and buckles

Increased bulk around waist

20
Q

Where is the pelvic band located?

A

Between the iliac crest and trochanter

21
Q

The Hip Joint & Pelvic band are indicated for?

A

Maximum ML control
Weak hip abductors or short residuum
Ease of donning is important, previous wearers

22
Q

What is a contraindication of the Hip joint & pelvic band?

A

When not needed/indicated

23
Q

What are the advantages of the Hip joint & pelvic band?

A

Easy to don, good swing phase control, increased ML stability

24
Q

What are the disadvantages of the hip joint & pelvic band?

A

Extremely bulky
Inherent pistoning
Increased weight

25
Q

What are the indications of suspenders?

A

Last resort
Previous wearer
Need to reduce forces around pelvis
Patient with abdominal scarring

26
Q

What is a contraindication of suspenders?

A

Whenever anything else will do

27
Q

What are the two most important factors of the knee system?

A

Voluntary control

Inherent stability

28
Q

What are the knee friction goals?

A

Primarily for swing phase
To control knee friction
Limit heel rise
Prevent terminal impact

29
Q

What are the knee friction types?

A

Mechanical friction
Fluid friction
Outside friction

30
Q

Mechanical friction knee is?

A 
Simple in design 
Adjustable 
Constant friction 
Static resistance to force 
Offers no stance phase stability
31
Q

Fluid friction knee is?

A 
Complex in design 
Heavier, more maintenance 
Dynamic resistance to force 
Offers some stance phase stability 
Smooth gait 
Patients with varying cadence

Lower Extremity Prosthetics III (3 decks)

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