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Flashcards in Exam 1 Deck (36)
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1

Does a PTB socket allow for volume change

No

2

Is PTB socket tight or loose AP?

tight

3

Pressure tolerant areas (6)

Patellar ligament
Anterior Compartment
Posterior Compartment
Lateral shaft of fibula
Medial shaft of tibia
Medial tibial flare

4

Pressure sensitive areas (7)

Lateral tibial flare
Anterior tibial tubercle
Crest of tibia
Distal end of tibia
Distal end of fibula
Head of fibula
Hamstring tendons

5

Why is a TT socket tipped in 5 degrees of knee flex?

to prevent distal end weight bearing

6

What is one purpose of a temporary prosthesis

densentization

7

Inset of the foot creates what

Genu varus at MSt

8

What is the function of genu varus during gait (4)

1.) Narrow BOS
2.) Mimics anatomical gait
3.) Loads and offloads appropriate structures
4.) Stresses LCL> MCL

9

How many ply sock used between skin and hard socket in TT

3-5

10

Hard socket (TT) is good for those with what

hygiene issues

11

What must someone have to use a hard socket (TT)

intact sensation and soft tissue protection over bony prominences

12

What is a soft interface or insert used for?

Mature limbs with less soft tissue coverage or limbs with more bony prominences

13

Revise socket when how many ply needed

more than 10

14

Most common interface between hard socket and RL

socks

15

3 Functions of socks:

1.) Cushion WB forces applied to RL
2.) Helps with volume control
3.) Moisture wicking

16

3 Functions of Suspension Systems:`

1.) Holds prosthesis to RL
2.) Allows patient to sit comfortably
3.) Minimizes movement of socket on RL

17

TT: Indications for Suction suspension (3)

1.) Good subcutaneous tissue
2.) At least fair UE function
3.) Pt who wants fewer straps

18

TT: Advantages for suction suspension (3)

1.) excellent suspension
2.) incr proprioception
3.) reduces torque

19

TT: Disadvantages for suction suspension (3)

1.) Tough to don/doff
2.) Requires good hygiene
3.) Durability of silicone liners not great

20

5 types of TT suspension systems

1.) Suction
2.) Knee Sleeve
3.) Supracondylar Cuff
4.) Supracondylar Suprapatellar
5.) Joints and corset

21

TT: Indications for Sleeve Suspension (3)

1.) Good ligaments
2.) Juveniles
3.) Long RL

22

TT: Advantages for sleeve suspension (5)

1.) Excellent suspension over patella
2.) Adjustable
3.) Conceals trim lines, more cosmetic
4.) Constriction is minimal
5.) Simple to use, lightweight

23

TT: Disadvantages for sleeve suspension (6)

1.) Can cause skin issues due to incr perspiration (need to clean daily)
2.) Tough to don/doff
3.) Knee flex can cause some bunching of material behind the knee
4.) Holes can reduce suction
5.) No added true knee stability

24

TT: Indications for Supracondylar Cuff (3)

1. Good ligaments
2. Current user
3. One who can't tolerate other types of suspension

25

TT: Advantages for Supracondylar cuff (3)

1. Unencumbered knee flexion
2. Easy to don/doff
3. Can use waist belt

26

TT: Disadvantages for Supracondylar cuff (4)

1. Pistons easily
2. Not added M/L stability
3. Can restrict or pinch in knee flexion
4. Excess soft tissue around distal thigh may impinge

27

Main socket types for TT

1.) Patellar tendon bearing
2.) Total surface bearing

28

TT: Indications for Joint and Corset Suspension (4)

1.) Instability of knee
2.) Unload an ultra sensitive RL
3.) Patient preference
4.) Heavy duty user

29

TT: Advantages for Joint and Corset Suspension (3)

1.) Incr overall stability
2.) Shared WB on thigh, less on RL
3.) Increases proprioceptive feedback

30

TT: Disadvantages for Joint and Corset Suspension (5)

1.) Not hygienic
2.) heavy
3.) not cosmetic
4.) long fabrication time
5.) Hassle of applying it

31

TT: Indications for Supracondylar Suspension (4)

1.) Pt needed M-L stability
2.) Pt wanting unrestricted knee extension
3.) Patients preferring fewer straps
4.) Shorter RL

32

TT: Advantages for Supracondylar suspension (3)

1.) Allows open patella for kneeling
2.) Improved cosmesis due to patellar opening
3.) Fairly easy to don/doff

33

TT: Disadvantages for supracondylar suspension (2)

1.) Large of fleshy thigh
2.) Reduced cosmesis

34

TT: Indications for Supracondylar suprapatellar suspension (3)

1.) Short RL
2.) Knee requires ML/AP stability
3.) Patients who want fewer straps

35

TT: Advantages for Supracondylar suprapatellar suspension (3)

1.) Incr WB surface
2.) Incr ML and AP stability
3.) Knee hyperextension control

36

TT: Disadvantages for Supracondylar suprapatellar suspension (4)

1.) Enclosed patella limits kneeling
2.) Large thigh girth inhbits good suspension
3.) Reduced cosemsis
4.) Requires skilled fabricator