Mock Questions Flashcards
TT bench alignmnet
Socket flex 5-7 degrees
Foot inset 1/2”-0
Socket anterior position to foot bolt should be 1-1.5”
Medial border of foot on line of progression
4 prosthetic causes for rapid knee flexion
Socket too far anterior
Heel/lever too long
Pt wearing shoe with different heel height
Stiff heel action
What causes a TT px to appear to be higher than sound leg when sitting
Posterior brim too high
Not enough hamstring relief
Incorrect length
What causes anterior distal tibia pressure
A/p too big Posterior brain too low Not enough relief Excessive use of knee extension Heel lever to long Excessive initial socket flexion
2 causes of distal limb edema and discoloration
Lock of total contact
Short socket
Three types liner
Therma plastic elastomer (TPE)
URATHAN
Silicon
Stance phase, what socket and anatomical conditions would cause trendelenburg gait
Px: insufficient socket adduction Loose socket m/l Not skeletal lock Amp: short limb Weak hip abductor Hip pathology Distal lateral stump pain
What are some alignment considerations for bilateral TF
Out set feet
Make knees as stable as possible
Shorten height of px
Why insufficient flexion would be a cause
TF amputee requires 15 degrees extension for normal stride length, 10 degrees available in lumbar spine. Therefore, 5 degrees preflexion needed to allow normal stride length with sound leg. 5degrees preflexion, hip extensors on stretch for powerful extension force for knee stability
what would cause an TF to break suction when he sits
Anterior brim too high
Loose socket tension
A/p too large
Would you fit 3mo TR amputee?
No fitting because skin is tender and function is very limited until child sits. ‘Fit with sit’
Usually 6mo with passive opening TD, cuff and harness
Why fit child with TR at 6 mo. Reasons:
Balance improved
To get child used to normal, symmetrical length extremities
To simulate bilateral function at normal work distances
To incorporate a prosthesis into the body image
To help child and parent to accept prosthesis
To reduce dependence on tactile sensation on end of residual limb
When do you fit active TD on child?
Clue that child is ready to use TD in bimanual activities (usually 18mo-2 years)
K0
The patient does not have the ability or potential to ambulate or transfer safely with or w/o assistance and a prosthesis does not enhance his/her quality of life or mobility
K1
Potential or ability to use pros for transfers or ambulate on level ground at a fixed cadence
Typical of the limited and unlimited to household ambulatory
