Week 8 Flashcards
For an elbow disarticulation what should you determine to figure out the socket style?
ML difference and if it is greater than 1/4
What are the ED suspension options?
Spiral channel flexible liner custom gel liner expandable silicone wall window/door
What are the advantages of the ED spiral channel?
no extra bulk
similar shape to arm
What are the disadvantages of the ED spiral channel?
more difficult to modify correctly
difficult to adjust
What are the material for a ED flexible liner?
pelite
Ucolite
multi-density
What are the advantages of the ED suspension flexible liner?
ease of donning
simple design
ease of adjust for fit changes
What are the disadvantages of the ED flexible liner?
stove pipe shape
increased bulk
What are some aspects of the ED silicone liner/
it fills the difference in size
don like flexible liner
can use hardware-lanyard suspension, pin lock
can be suction suspension
What are the advantages of the Ed custom silicone liner/
comfort
versatile options
positive suspension
What are the disadvantages of the ED custom silicone liner?
complication in fabricating
time to fabricate
central fabrication time
What are some aspects of the Ed expandable silicone wall/
inner wall
create cavity over silicone wall
push through the flexible silicone
What are the advantages of the ED expandable silicone wall/
ease of donning
less bulk than the liner versions
What are the disadvantages of the ED expandable silicone wall?
difficult to fabricate
no adjustability
difficult to clean
stove pipe
What are the advantages of the ED window/door?
ease of donning
simple
What are the disadvantages of the ED window/door?
cosmetics
straps bulk
bilaterals
What are the modifactions for a transhumeral class 1 ED?
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
What are the modifications for class II and III?
smooth cast check circumferences check proximal AP check length make medial axilla wall flat- define pectorlais and latissimus dorsi relieve distal an/lat humerus
Where should you flatten the posterior wall for transhumeral class II and III modifications?
distal to spine of scapula
parallel to spine and body of scapula
Where should the anterior wall contour to for class II and III modifications?
delto-pectoral groove, but not digging into head of humerus or coracoid process
When should the Axilla ML be the same as the measurements?
traditional
UDS
AP clasp design
When should the Axilla ML not be the same as the measurements?
HIFI
fleshy residuum
How much should the circumferences be reduced proximally?
2-4%
What two widths should be the same?
compression zones and relief zones
What are the modifications for a shoulder disarticulation/forequarter?
smooth cast
ensure AP measurment
Don’t bring trimlines too medially- may limit ab/adduction, pro/retraction
What are the body powered elbow joints?
external friction (w/o rotation unit) internal friction (w/ rotaion) outside manual locking internal manual locking internal electronic locking ERGO arm Otto Bock
What are some aspects of the external friction elbow joint?
positioning in elbow flex/ext
for someone who can’t learn lock/unlock action
What are the disadvantages of the external friction elbow joint?
won’t hold position for heavy objects
adds ML bulk
What are aspects of the internal friction elbow joint?
adjustable constant friction flex/ext, IR/ER
for someone who can’t learn lock/unlock action
What are the disadvantages of the internal friction elbow joint>
won’t hold position for heavy objects
less bulky than external joints
What are some aspects of the external locking elbow joint?
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.
What’s an advantage of the external locking elbow joint?
forearm lift assist on lateral side
What are the disadvantages of the external locking elbow joint/
bulky complicated small parts easily lost difficult for children under 5 decreased power and excursion friction
What are the advantages of the Otto Bock external locking elbow joint/
less bulky than hosmer
less complicated joint mechanism
What is the disadvantage of the Otto Bock external locking elbow joint?
can’t use the Hosmer lift assist on lateral
What is the number for a small internal locking elbow joint and number of locking positions?
E-50
10 positions
What is the number for medium internal locking elbow joint and number of locking positions?
E-200
11 locking positions
What is the number for large internal locking elbow joint and number of locking positions/
E-400
11 positions
What is the number for large heavy duty internal locking elbow joint and number of locking positions?
E-400
8 locking positions
When should a internal locking elbow joint be used/
for class II and III
What are some advantages of the internal locking elbow joint?
can be retro-fitted with positive locking rotation
can use hosmer lift assist on lateral
What are the advantages of the forearm lift assist?
counter balance the weight of the TD and other objects
allows you to adjust the cabling to increase ROM
adjustable tension
