Prosthetic Components & Design

Question 1

components

Answer 1

individusla parts of the prosthetic limb

Question 2

trim line

Answer 2

edges of the prosthetic socket

fits down into

Question 3

definitive prosthesis

Answer 3

the end product produced by the prosthetist

Question 4

suspension

Answer 4

how the prosthesis is attached to the users residual limb

Question 5

bench alignment

Answer 5

common relationship among components set by the prosthetist before any customizations are made

Question 6

sockets are..

Answer 6

custom fit to the individuals residual limb

Question 7

what can negative space in the socket cause?

Answer 7

can create a vacuum effect which can pull fluid down to the distal end of the limb

Question 8

check socket

Answer 8

definitive socket that is adjusted after weight bearing through the limb

Question 9

patellar tendon-bearing socket

Answer 9

• PTB
• selectively loads the patellar tendon and medial tibial flare
• off loads tender boney areas
• relief of fibular head

Question 10

what is significant of the trim line of the patellar tendon bearing socket

Answer 10

it has a low posterior trim line to allow for hamstring tendons which will help allow full knee flexion

Question 11

total surface bearing socket

Answer 11

• TSB
• distributes weight bearing over entire surface of RL
• difficult to make correctly

Question 12

what is the goal of the total surface bearing socket

Answer 12

uniform pressure and reducing shear forces – bigger surface area

Question 13

quadrilateral socket

Answer 13

• four walls that contain the thigh

Question 14

what does the posterior shelf of the quadrilateral socket look like

Answer 14

flat

Question 15

what is the importance of the flat posterior shelf

Answer 15

primary weight bearing surface for ischial tuberosity and glute muscles

Question 16

is the anterior or posterior wall higher in the quadrilateral socket

Answer 16

anterior

Question 17

ischial containment socket

Answer 17

• covers the ischial tuberosity

Question 18

in the ischial containment socket is it wider anterior to posterior or medial to lateral

Answer 18

• wider anterior to posterior than medial to lateral to resist extra femoral abduction
• high medial and posterior wall