Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Lower Extremity Prosthetics III > Week 2 > Flashcards

Week 2 Flashcards

(72 cards)

Start Studying
0
Q

What are the below knee pressure tolerant areas?

A

Patellar tendon
Medial tibial plateau
Tibial and Fibular shafts
Distal end (rarely, maybe sensitive)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What are the below knee pressure sensitive areas?

A

Anterior tibia
Anterior tibial crest
Fibular head and neck
Fibular nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the Transfemoral pressure sensitive areas?

A

Distolateral end of the femur
Pubic symphysis
Perineal area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the Transfemoral pressure tolerant areas?

A

Ischial tuberosity
Gluteals
Lateral sides of the residual limb
Distal end (rarely, may be sensitive)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Who is the patellar tendon bearing socket indicated for?

A

Previous wearer
Extreme Atrophy
Selective hot spots - neuromas, callusing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the total surface bearing socket?

A

Even distribution of pressures

Total contact fit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Who is the total surface bearing socket indicated for?

A

Majority of patients
Mild to moderate Atrophy
Patients with skin conditions or considerations
Unstable volume or edema

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the coronal plane forces?

A

Fulcrum at MTP
Distal lateral forces
Proximal medial forces
Loading pressure tolerant areas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the sagittal plane alignment forces?

A

Proximal posterior
Anterior pre-Tibials
Proximal anterior
Patellar tendon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the biomechanical goals?

A

~Maximize the weight-bearing capacity of the residual limb
~Provide ML stability at Mid-Stance on the prosthetic side- modification of dynamic forces
~Encourage knee flexion throughout stance phase- modification of dynamic forces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is pressure?

A

Pressure= force/area

Even distribution of forces is key

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Inclination of forces?

A

Loads pressure tolerant anterior surface
Encourages knee flexion at heel strike
Prevents knee hyperextension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the purpose of total contact?

A

Minimize edema
Increase proprioception
Improve weight bearing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Is the floor reaction line medial or lateral to the knee joint (NHL)?

A

Medial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What moment is created at the knee at mid-stance?

A

Varus moment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Prosthetic alignment: foot initially inset at _____mm (medial)

A

12mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Excessive Varus moment is caused by?

A

Increased distal-lateral and proximal-medial pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Insufficient Varus moment is caused by?

A

Valgus moment

Proximal-lateral and proximal-medial pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

When distal-lateral and proximal-medial are loaded base of support is ____________.

A

Narrowed
Decrease in energy expenditure
Loads pressure tolerant areas and relieved pressure sensitive areas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Effects on forces:
Increase mass&raquo_space; ___________ force on limb
Increase inset&raquo_space; ____________ force on limb
Increase limb length&raquo_space; ___________ force on limb
Increase trim lines&raquo_space; ____________ force on limb

A

Increase
Increase
Decrease
Decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Prosthetic alignment: initial foot placement at ____posterior to ankle bolt. Foot is dorsiflexed, socket is aligned with _____degrees of flexion and proper heel stiffness

A

37 mm

10 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Excessive knee flexion at early stance is caused by?

A

Heel too firm, foot too DF, excessive socket flexion, foot too far anterior, heel too high, shoe too tight, keel too soft.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Knee hyperextension at late stance is caused by?

A

Foot too far anterior, foot too PF, inadequate flexion of socket, heel too soft, keel too stiff

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Premature loss of anterior support at late stance (drop off): is caused by?

A

Foot too far posterior, foot size too small, keel too soft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
What are the modes of suspension?
``` Joint and Corset suspension Belt or cuff suspension Compressive sleeve suspension Anatomical- Suction/ Expulsion valve suspension Elevated vacuum ```
25
Joint and Corset is indicated for?
Incorporates thigh weight bearing Improves ML stability Heavy duty user Patient preference
26
What are the advantages of the Joint and Corset?
Increases weight bearing surface Unloads the residual limb Increases ML stability Knee extension control
27
What are the disadvantages of the Joint and Corset?
Heavy Un-cosmetic Inherent pistoning
28
Who is the supra-condylar cuff indicated for?
Many of TT users prefer Patients with stable ligaments Juvenile patients Long residual limbs
29
What are the advantages of the supra-condylar cuff?
Provides good suspension over patella Adjustable Can be used in combination with waist belt
30
What are the disadvantages of the supra-condylar cuff?
Can be restrictive | Does not increase ML stability, un-cosmetic
31
Who is the sleeve suspension indicated for?
Many of TT users prefer Patients with stable ligaments Juvenile patients Long residual limbs
32
What are the advantages of sleeve suspension?
Provides excellent suspension Conceals trim lines Variety of materials available
33
What are the disadvantages of the sleeve suspension?
Can cause skin problems Can increase perspiration, hard to don May not be indicated for vascular patients
34
Who is the supra-condylar and patellar suspension indicated for?
Patients with very short residual limbs Patient requiring ML stability Patients who want less straps
35
What are the advantages of supra-condylar and patellar?
Increase weight bearing surface Improved ML stability Improves cosmesis
36
What are the are the disadvantages of supra-condylar and patellar?
Can inhibit some motion and activity | Difficult to use on obese or muscular
37
Who is supra-condylar suspension indictated for?
Patients with very short residual limbs Patients requiring ML stability Patients who want less straps
38
What are the advantages of supra-condylar suspension?
Less restrictive than PTB-SC | Improved cosmesis
39
What are the disadvantages of supra-condylar suspension?
Loss of rigid hyperextension stop | Difficult to use on obese or muscular
40
Who is the silicon suction indicated for?
Patients with good subcutaneous tissue Full function of upper extremities Want less straps
41
What's the advantages silicon suction?
Excellent suspension Eliminates pistoning Increased proprioception Good torque absorption
42
What are the disadvantages of silicon suction?
Can be difficult to don | Good hygiene is required
43
Who is vacuum and suction suspension indicated for?
Patients with good subcutaneous tissue Patients who wants less straps Patients who can't tolerate distal pulling from a lock and pin
44
What are the advantages of vacuum and suction Suspension?
Excellent suspension Eliminates pistoning Increased proprioception
45
What are the disadvantages of vacuum and suction suspension?
Maintenance is required Can loose vacuum Can be complicated to use for some
46
Shock absorbers and Rotational units are indicated?
Torque absorption active users Special situations and activities
47
Who is the SACH feet indicated for?
Many lower limb users | Juveniles
48
What are some contraindications of the SACH feet?
Active individuals When knee stability is required When inversion/eversion is required
49
What are the advantages of the SACH feet?
Cosmetic Quiet Little maintenance
50
What are the disadvantages of the SACH feet?
Deterioration of soft materials | No torque absorption
51
Who is the single axis prosthetic feet indicated for?
Patients needing knee stability
52
What are the contraindications of the single axis feet?
Many lower limb users Active users When torque, inversion or eversion is needed
53
What are the advantages of the single axis feet?
More shock absorption | Promotes knee stability
54
What are some disadvantages of the single axis feet?
No torque absorption | Requires bumper replacement
55
What are the indications for the multi-axis feet?
Torque absorption needed Special activities Need for in/eversion
56
What's a contraindication for the multi-axis feet?
When other components can be used
57
What are the Advantages of the multi-axis feet?
Absorbs torque, shock | Foot conforms to surfaces
58
What are the disadvantages of the multi-axis feet?
Cosmesis, increased weight | Increased maintenance
59
Who is the dynamic response feet indicated for?
Active ambulators | Community ambulators
60
What's a contraindication of the dynamic response feet?
One speed ambulators
61
What are the advantages of dynamic response feet?
Smoother gait, less energy expenditure | Light weight, cosmetic, energy storing
62
What's the disadvantages of the dynamic response feet?
Materials durability, limited sizes, expense
63
Who is the multi-axis dynamic response feet indicated for?
Active users, varying cadence ambulators | Community ambulators, athletes
64
What's a contraindication of the multi-axis dynamic response feet?
Single speed ambulators
65
What's the advantages of the multi-axis dynamic response feet?
Multi-axial capabilities, dynamic response | Energy storing capabilities
66
What's the disadvantages of the multi-axis dynamic response feet?
Expense | Maintenance
67
What's an indication of the external power prosthetic feet?
Potentially, all mildly active ambulators
68
What are some contraindications of the external power prosthetic feet?
K1 level ambulators | Wet or corrosive environments
69
What's the advantages of the external power prosthetic feet?
Anatomical power and propulsion | Anatomical limits for PF and DF
70
What are the disadvantages of the external power prosthetic feet?
Batteries, weight , cost Processing speed Limited environment use
71
What are the trans-tibial gait deviations?
``` Inadequate flexion or extension Medial or lateral leaning pylon Drop off Erratic movement Heel lever and toe lever Whips ```

Lower Extremity Prosthetics III (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions