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Transtibial Prosthetics Questions and Answers Fully Solved
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Transtibial Prosthetics
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Transtibial ProstheticsTT - answer Transtibial
A TT prosthesis May also be referred to as? – answer BK
What is a socket? - answer The part of the prosthesis that holds onto the patient . It
contacts and dispenses pressure around the patients residual limb. It supports the
residual limb during WB and transmits forces from the limb to control placement of the
foot
What are the 4 main components of a TT prosthetic? - answer Foot
Shank or pylon
Suspension mechanism
Socket and interface (liners)
If a patient has a short residual limb is this a good or bad prognosis? - answerBad
Why is a short residual limb bad? - answerIncreased forces on a small area
What are the 3 common types of sockets - answerPatellar tendon bearing (PTB)
Total surface bearing (TSB)
Flexible socket/rigid frame
PTB - answerPatellar tendon bearing socket
TSB - answerTotal surface bearing socket
A TSB socket is used with? - answerSoft liner
What socket is the most common? - answerTSB
If you place compression on the residual limb what will occur? - answerIncreased
edema and fluid
True or false, the longer the residual limb the better? - answerTrue
What is the whole point of a PTB socket? - answerAreas of relief and areas of WB
(petal lark tendon, counterforce from popliteal fossa)
What are the areas of WB for a PTB socket? - answerPatellar tendon and counter force
from the popliteal fossa
, What is the most effective residual limb shape? - answerConical shape
What are the 3 different shapes of a residual limb? - answerConical
Cylindrical
Bulbous
Definition of a conical shaped residual limb - answerProximal circumference is greater
than the distal circumference
Definition of a cylindrical shaped residuals limb - answerNo distinct differences in the
shape of the limb proximal and distal
Definition of a bulbous residual limb - answerDistal circumference is greater than the
proximal circumference
At what time will the patients residual limb will be at its final size and shape that they will
remain at? - answer1 year
If a patient has diabetes what is another residual limb shape that they may have? -
answerIce pick
With a PTB socket what type of force is present? - answerCounterforce between the
patellar tendon bar and the popliteal bulge force
What are the pressure tolerant areas? - answerSoft tissue (posterior compartment,
anterior compartment, fibula shaft, patellar tendon, femoral condyles)
Are pressure tolerant areas WB or non WB? - answerWB
What are the pressure intolerant areas? - answerBone (HS tendons, fibulae head, tibial
crest, distal tibia,
If the pressure intolerant areas are red is this a good or bad thing? - answerBad thing
If the pressure tolerant areas are red is this a good or bad thing? - answerGood
What was the issue with a PTB socket? - answerLack of distal contact resulting in
edema at the distal residual limb
When choosing a socket what do you want out of it? - answerWant more pressure and
total surface contact to distribute the pressure over a larger surface area to decreased
edema
What type of socket has a liner? - answerTSB
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