BEMB Prosthetics

Question 1

What is a prosthesis?

Answer 1

It is an artificial device that replaces a missing body part which may be lost through a disease, trauma or congenital disorder.

Question 2

What are the 3 types of prosthesis?

Answer 2

Below knee (Transtibial)
Above knee (Transfemoral)
Hip Disarticulation

Question 3

What are the 3 basic components in a below knee prosthesis

Answer 3

socket, shank, foot

Question 4

Function of a socket in a below knee prosthesis

Answer 4

Weight bearing feature to relieve stresses on tibial crest.

Question 4

Function of a shank in a prosthesis?

Answer 4

A tube of alloy or titanium that attaches to the socket and foot.

Question 5

What is SACH

Answer 5

Solid ankle cushion heel

Question 6

Advantage and disadvantage of SACH

Answer 6

Advantages:
* No moving parts
* Requires little maintenance
* Good appearance
* Quiet in operation
* Manufacturability for different shoe heel height
Disadvantage:
Limited range of dorsiflexion and plantar flexion.

Question 7

What does a Ideal prosthesis compromise?

Answer 7

It is a compromise of weight verses function.
Exclusion of features will cause excessive stress and an inefficient gait.