Week 8

Question 1

For an elbow disarticulation what should you determine to figure out the socket style?

Answer 1

ML difference and if it is greater than 1/4

Question 2

What are the ED suspension options?

Answer 2

Spiral channel
flexible liner
custom gel liner
expandable silicone wall
window/door

Question 3

What are the advantages of the ED spiral channel?

Answer 3

no extra bulk

similar shape to arm

Question 4

What are the disadvantages of the ED spiral channel?

Answer 4

more difficult to modify correctly

difficult to adjust

Question 5

What are the material for a ED flexible liner?

Answer 5

pelite
Ucolite
multi-density

Question 6

What are the advantages of the ED suspension flexible liner?

Answer 6

ease of donning
simple design
ease of adjust for fit changes

Question 7

What are the disadvantages of the ED flexible liner?

Answer 7

stove pipe shape

increased bulk

Question 8

What are some aspects of the ED silicone liner/

Answer 8

it fills the difference in size
don like flexible liner
can use hardware-lanyard suspension, pin lock
can be suction suspension

Question 9

What are the advantages of the Ed custom silicone liner/

Answer 9

comfort
versatile options
positive suspension

Question 10

What are the disadvantages of the ED custom silicone liner?

Answer 10

complication in fabricating
time to fabricate
central fabrication time

Question 11

What are some aspects of the Ed expandable silicone wall/

Answer 11

inner wall
create cavity over silicone wall
push through the flexible silicone

Question 12

What are the advantages of the ED expandable silicone wall/

Answer 12

ease of donning

less bulk than the liner versions

Question 13

What are the disadvantages of the ED expandable silicone wall?

Answer 13

difficult to fabricate
no adjustability
difficult to clean
stove pipe

Question 14

What are the advantages of the ED window/door?

Answer 14

ease of donning

simple

Question 15

What are the disadvantages of the ED window/door?

Answer 15

cosmetics
straps bulk
bilaterals

Question 16

What are the modifactions for a transhumeral class 1 ED?

Answer 16

smooth cast
check circumference measurements
bring bold to measured ML at axilla
bring distal AP to measurements
make certain medial axilla wall is flat-pectoralis/latissimus dorsi tendons defined
relieve bony prominences-dit lat/ant humerus

Question 17

What are the modifications for class II and III?

Answer 17

smooth cast
check circumferences
check proximal AP
check length
make medial axilla wall flat- define pectorlais and latissimus dorsi
relieve distal an/lat humerus

Question 18

Where should you flatten the posterior wall for transhumeral class II and III modifications?

Answer 18

distal to spine of scapula

parallel to spine and body of scapula

Question 19

Where should the anterior wall contour to for class II and III modifications?

Answer 19

delto-pectoral groove, but not digging into head of humerus or coracoid process

Question 20

When should the Axilla ML be the same as the measurements?

Answer 20

traditional
UDS
AP clasp design

Question 21

When should the Axilla ML not be the same as the measurements?

Answer 21

HIFI

fleshy residuum

Question 22

How much should the circumferences be reduced proximally?

Answer 22

2-4%

Question 23

What two widths should be the same?

Answer 23

compression zones and relief zones

Question 24

What are the modifications for a shoulder disarticulation/forequarter?

Answer 24

smooth cast
ensure AP measurment
Don’t bring trimlines too medially- may limit ab/adduction, pro/retraction

Question 25

What are the body powered elbow joints?

Answer 25

``` external friction (w/o rotation unit) internal friction (w/ rotaion) outside manual locking internal manual locking internal electronic locking ERGO arm Otto Bock ```

Question 26

What are some aspects of the external friction elbow joint?

Answer 26

positioning in elbow flex/ext | for someone who can't learn lock/unlock action

Question 27

What are the disadvantages of the external friction elbow joint?

Answer 27

won't hold position for heavy objects | adds ML bulk

Question 28

What are aspects of the internal friction elbow joint?

Answer 28

adjustable constant friction flex/ext, IR/ER | for someone who can't learn lock/unlock action

Question 29

What are the disadvantages of the internal friction elbow joint>

Answer 29

won't hold position for heavy objects | less bulky than external joints

Question 30

What are some aspects of the external locking elbow joint?

Answer 30

locking joint on medial side following joint lateral hosmer: small, medium, and large- 7 lock positions; heavy duty- 5 lock positions positive lock alternating one pull lock, one pull unlock.

Question 31

What's an advantage of the external locking elbow joint?

Answer 31

forearm lift assist on lateral side

Question 32

What are the disadvantages of the external locking elbow joint/

Answer 32

``` bulky complicated small parts easily lost difficult for children under 5 decreased power and excursion friction ```

Question 33

What are the advantages of the Otto Bock external locking elbow joint/

Answer 33

less bulky than hosmer | less complicated joint mechanism

Question 34

What is the disadvantage of the Otto Bock external locking elbow joint?

Answer 34

can't use the Hosmer lift assist on lateral

Question 35

What is the number for a small internal locking elbow joint and number of locking positions?

Answer 35

E-50 | 10 positions

Question 36

What is the number for medium internal locking elbow joint and number of locking positions?

Answer 36

E-200 | 11 locking positions

Question 37

What is the number for large internal locking elbow joint and number of locking positions/

Answer 37

E-400 | 11 positions

Question 38

What is the number for large heavy duty internal locking elbow joint and number of locking positions?

Answer 38

E-400 | 8 locking positions

Question 39

When should a internal locking elbow joint be used/

Answer 39

for class II and III

Question 40

What are some advantages of the internal locking elbow joint?

Answer 40

can be retro-fitted with positive locking rotation | can use hosmer lift assist on lateral

Question 41

What are the advantages of the forearm lift assist?

Answer 41

counter balance the weight of the TD and other objects allows you to adjust the cabling to increase ROM adjustable tension