EXAM 3: Week 1

Question 1

SACH solid ancillary cushioned heel

Answer 1

K1,
- for household ambulatory, post op, preparatory, pediatric
- minimal energy return
- no moving parts, low maintenance but heel cushion can wear down

Question 2

SAFE foot

Answer 2

• non articulating foot
• K1 level

Question 3

Single axis foot

Answer 3

K1 K2
- only does PF and DF
- no energy return
- shock absorption at heel strike
- may lessen difficulty of descending inclines

Question 4

Flexible KEEL

Answer 4

K2
- lightweight, flexible, multiraxial, shock absorption and energy return
- household ambulatory, slow pace
- smoother heel toe

Question 5

Energy storing/ dynamic response

Answer 5

K3-K4
- higher profile ambulatory
- C or J shape
- non articulated
- for athletes, patients who can walk variable cadence, active patients

Question 6

Multi axis foot

Answer 6

K2-K4

• PF, DF, Eversion, Inversion, uneven terrain, shock absorption
• has weight limit

Question 7

Hydraulic Ankle/Foot

Answer 7

Mod to high energy return
- adjusts for varied surfaces
- slightly heavier

Question 8

Microprocessor

Answer 8

• heavier !
• actively responds to changes in environment
• batter needs nightly recharging
• DF/PF
• NOT FOR obese, high activity, water dirt sand, temp extremes

Question 9

Powered Ankles

Answer 9

1. Provides push off in terminal stance
2. Myoelectric signals from RL,
3. Different levels of gait speed
4. Ascend/descent to replace gastric

• heavier and more expensive
• battery operated

Question 10

Total Contact Theory

Answer 10

RL is fully within socket and all surfaces are in contact with the walls
- prevents air spaces where edema can collect
- not all parts of the limb are WB, just in contact

Question 11

Selective Loading Theory

Answer 11

Identification of a specific area of the RL that are tolerant or intolerant to pressure
- loading the more pressure tolerant areas

Question 12

Pressure tolerant areas

Answer 12

• patella tendon
• medial tibia flare
• anti compartment
• Lateral shaft of fibula
• posterior compartment

Question 13

Pressure Intolerant areas

Answer 13

• patella
• lateral tibia flare
• ant tibial tubercle
• crest of tibia
• distal end of tibia and fibula
• head of fibula
• peroneal nerve

Question 14

Total surface bearing socket

Answer 14

Distributes forces across the entire residual limb
Reduce skin breakdown

Question 15

Suspension

Answer 15

Coupling btw the residual limb and prosthesis

Loss of suspension- limb falling off

Question 16

Socket

Answer 16

Ideally fabricated to accommodate 3 ply

If 10 ply sock work, consider socket replacement/modification

Too many socks can cause bunching, head, and focal discomfort