Transfemoral Components Flashcards Preview

Prosthetics and Orthotics > Transfemoral Components > Flashcards

Flashcards in Transfemoral Components Deck (10)
Loading flashcards...
1

(Prosthetic) Knee stability is:

The ability of the prosthetic knee to remain extended and fully supportive during the stance phase of walking.

2

Knee classifications are divided into (4) types:

1. Axes
2. Friction
3. Braking or Locking Mechanisms
4. Microprocessor control

3

Types of knee axes (2):

1. Single axis
2. Polycentric axis

4

Types of knee friction (3):

1. Mechanical
2. Pneumatic
3. Hydraulic

5

Braking or locking unit example in a mechanical friction knee:

Stance control knee

6

Microprocessor control knee:

-- Sense whether knee flexion or extension moment is occurring and the knee position that is present

-- On board computer adjusts knee resistance to accommodate a range of gait speeds

7

Microprocessor Knee (Advantages and Disadvantages:

Advantages:
-- Wide range of gait speeds
-- Energy saving

Disadvantages:
-- Cost
-- Weight
-- Unknown durability

8

Transfemoral Socket types (2):

1. Quadrilateral
2. Ischial Containment socket

9

Transfemoral Suspension Types (4 most common):

1. Suction suspension
a. traditional
b. roll-on silicone liner

2. Hypobaric

3. Soft Belts
a. Total Elastic Suspension (TES)
b. Silesian Bandage

4. Pelvic Belt

10

Torsion Adapter Unit function:

Absorbs ground reaction force to minimize friction between the socket and the residual limb.

-- Allows for up to 20 degrees of rotation
-- Advantageous for golfers, or individuals with skin
breakdown