ABC - PROSTHETIC ASSISTANT EXAM QUESTIONS AND ANSWERS

ABC - PROSTHETIC ASSISTANT
EXAM QUESTIONS AND
ANSWERS 2026 - 2027


In TF pt, when inadequate socket flexion is incorporated into the
prosthesis what will the patient be unable to do without gait deviation
- ANSWERS-Have symmetric step lengths


A TT pt comes in, the pt has been using a TT prosthesis without
problems for years. The pt has PVD and has been experiencing
ischemic pain within his prosthetic socket, in his gastroc muscles.
What would be the best plan of action - ANSWERS-Decrease
pressure posterior and adjacent to the popliteal artery
Recommend the pt to be seen by a vascular specialist


In normal gait, maximum knee flexion reaches approx - ANSWERS-
60-65 degrees


When external rotation of the prosthetic foot is needed, the toe lever
or keel of the foot is relatively - ANSWERS-Shortened


For a BK @ initial contact, if the pt feels their knee to extended, what
might be causing this - ANSWERS-Faulty suspension
Insufficient pre-flexion of the socket

,Foot too anterior


For a BK @ initial contact, if the pt feels their knee too flexed, what
might be causing this - ANSWERS-Faulty suspension
Flexion contracture


For a BK @ inital contact, if the pt feels unequal stride length, what
might be causing this - ANSWERS-Foot too posterior/anterior
Poor gait training


For a BK @ loading response, if the pt's knee remains extended and
"rides" the heel or "crushes", what might be causing this -
ANSWERS-Foot too anterior
Socket too extended, Foot too plantarflexed
Prosthetic foot heel to soft and requires a bumper
Heel on shoe too low
Poor gait training


For a BK @ loading response, if the pt's knee flexion is abrupt, and
has instability with knee buckling, what might be causing this -
ANSWERS-Weak quadriceps
Foot too posterior
Socket too flexed, Foot too dorsiflexed
Heel on shoe is too high
Prosthetic foot bumper or heel wedge too firm

,For a BK @ loading response, if the pt feels that their foot is slapping,
what might be causing this - ANSWERS-Plantarflexion resistance too
soft
Incorrect foot category


For a BK @ midstance, if the pylon leans medially, what might be
causing this - ANSWERS-Too much socket adduction
Foot too outset


For a BK @ midstance, if the pylon leans laterally, what might be
causing this - ANSWERS-Not enough adduction
Foot too inset


For a BK @ midstance, if there is too much varus moment, what
might be causing this - ANSWERS-Foot too inset


For a BK @ midstance, if there is too little varus moment, what might
be causing this - ANSWERS-Foot too outset


For a BK @ midstance, if their feet are too close together, what might
be causing this - ANSWERS-Foot too inset
Gait training is needed


For a BK @ midstance, if their feet are too far apart, what might be
causing this - ANSWERS-Foot too outset

, Gait training is needed


For a BK @ midstance, if their lateral trunk is bending to the
prosthetic side, what might be causing this - ANSWERS-Prosthesis
height is incorrect
Residual limb pain
Foot too outset


For a BK @ terminal stance and pre-swing, if heel off occurs too
early and the pt "drops off" too quickly onto the sound side, what
might be causing this - ANSWERS-Foot too posterior
Foot too dorsiflexed


For a BK @ terminal stance and pre-swing, if heel off is delayed
(with potential hyperextension), what might be causing this -
ANSWERS-Foot too anterior
Foot too plantarflexed


For a BK @ terminal stance and pre-swing, if the socket drops away
from the patient, what might be causing this - ANSWERS-Suspension
too loose


For a BK @ swing, if the foot "whips" medial or lateral during initial
swing, what might be causing this - ANSWERS-Socket is rotated on
the pt