Transtibial Components

Question 1

Types of Prosthetic Feet

Answer 1

• Conventional
  
  • ​​Non-articulating (rigid/flexible keel) - Articulating (single/multiple axis)
• Dynamic
  
  • ​​Non-articulating - Articulating

Question 2

SACH with softer heel cushion produces what during initial contact?

Answer 2

• quicker “PF” gets foot to ground faster
• reduces time GrF is post to knee resulting in a decreased knee flex moment (Inc stability)

Question 3

SACH with a firmer heel cushion → produces what during initial contact?

Answer 3

• Slower “PF” mimics NL gait;
• knee flex moment is higher (smoother gait transition)

Question 4

in conventional–Single Axis Foot (SAF), what controls amount and rate of motion?

Answer 4

anterior and posterior bumpers

Question 5

Single Axis Foot is appropriate for those that

Answer 5

require more stability with the foot on the ground quicker (K1 and K2)

Individuals with decreased quad strength, bilateral amp, TF

Question 6

Conventional Multi-Axis Foot advantages

Answer 6

• uneven terrains
• absorbs torque forces before transmitted to RL

Question 7

Answer 7

Dynamic Response Feet

Function as a “spring”

Question 8

Non-articulating Dynamic Feet

Answer 8

• Walk with less difficulty & more energy efficiency
• Must ambulate at a min speed to create enough force to deform the keel (K3, K4)

Question 9

name the circled part

Answer 9

The Shank (AKA Pylon)

• Transmits forces
• Restore limb shape

Question 10

Portion of the prosthesis that contains, supports and disperses pressure on residual limb.

Answer 10

The socket

Question 11

PRESSURE-TOLERIANT AREAS

Answer 11

• Patellar tendon
• Pre-tibial muscles and lateral surface of the fibula
• Popliteal fossa and gastroc-soleus

Question 12

describe this prothesis

Answer 12

transtibial supracondylar prosthesis, endoskeleton, dynamic action foot, mid keel