PROSTHETIC ASSISTANT UPDATED TEST PAPER
QUESTIONS AND ANSWERS MARKED A+
✔✔During midstance, what would cause lateral displacement exceeds 1/2"? - ✔✔Loose
socket medial lateral
Foot excessively inset
✔✔During midstance, what would cause no lateral displacement or displaced medially?
- ✔✔Foot too far outset
Pain in fibula nerve
Very short residual limb
Knee joint pathology
✔✔What would cause the knee to go into extension during heel rise? - ✔✔Toe lever
arm is too long
✔✔During toe off, what would make the patient feel like they are "dropping off"? -
✔✔Foot too posterior
Short keel in foot
Heel of shoe too high
✔✔Dorsiflexing the foot is the same as - ✔✔Flexing the socket
Heel too high
Heel too rigid
✔✔Plantarflexing the foot is the same as - ✔✔Extending the socket
Heel too short
Heel too soft
✔✔How do you correct medial distal and lateral pressure? - ✔✔Abduct socket
Inset foot
Evert foot
Internally rotate foot
✔✔How do you correct medial proximal and lateral distal pressure? - ✔✔Adduct the
socket
Outset foot
Invert foot
Externally rotate foot
✔✔How do you correct anterior distal and posterior proximal pressure? - ✔✔Extend
socket
Move socket posterior
Plantarflex foot
Shorten heel
,Soften heel bumper
✔✔How do you correct anterior proximal and posterior distal pressure? - ✔✔Flex socket
Move socket anterior
Dorsiflex socket
Higher heel
Stiffen heel bumper
✔✔A PT with TT prosthesis complains during ambulation of pressure on the anterior
distal end of the residuum. Physical examination reveals a reddened area to their
residual limb. What could be causing the pain? - ✔✔The prosthetic socket is in
excessive extension
✔✔Piston action of a BK PTB prosthesis is a result of - ✔✔Inadequate suspension
✔✔In dynamic alignment, if the knee is forced forward and the knee flexion is
exaggerated at heel contact, it means - ✔✔Excessive anterior tilt of the socket
✔✔As the outset of the foot is increased during BK alignment, pressures are increased
on the following areas of the stump - ✔✔Medial distal and lateral proximal aspect
✔✔When BK amputee controls the tendency of the knee to flex after heel strike, the
pressures are increased on the following areas of the stump - ✔✔Anterior distal and
posterior proximal
✔✔A BK returns to your office complaining that he is "stopping" in midstance and
having trouble rolling over the toe. Gait and alignment were perfect at delivery. What
could be the problem? - ✔✔He's changed his shoes and the new shoes have a lower
heel height
✔✔Foot of a BK is inset, the forces are distributed - ✔✔Medial/proximal and
lateral/distal
✔✔With a BK at midstance, where are the pressures in the socket in the sagittal plane -
✔✔Anterior/proximal and posterior/distal
✔✔A BK during static alignment, if the pylon leans laterally, the cause may be - ✔✔Too
much abduction in the socket
✔✔What is the effect of moving the socket more forward over the foot? - ✔✔Reduces
length of anterior lever of the foot
, ✔✔1 wk after del, BK pt complains of hyper-extension of the knee at midstance. Most
likely cause of this is - ✔✔The patient has changed to a shoe with a lower heel
✔✔In BK bench alignment, correct Med/Lat placement of the foot with reference to the
midline of the socket is - ✔✔Inset up to 1/2"
✔✔During dynamic alignment of a PTB prosthesis, excessive knee flexion occurs at the
beginning of heel rise. What is the best adjustment to correct the problem? - ✔✔Move
foot anterior and decrease socket flexion
✔✔During static alignment of a PTB prosthesis, the prosthesis noted that the pt's knee
was going into hyper-extension while standing, even though bench alignment had been
correct. The prosthesis should - ✔✔Check the compression of the SACH heel
✔✔TT PT comes in wearing a traditional exoskeletal PTB Prosthesis with a SACH foot.
PT states that they feel like the prosthesis is throwing her knee forward as soon as the
heel firmly contacts the ground. Prosthesis has been good for 2 years until 1 month ago.
What is the first clinical action to take at this time? - ✔✔Check to see if the pt switched
to a shoe with higher heel height compared to what she used to wear
✔✔TT PT comes in, upon examining gait you notice a mild extension moment at the
knee in stance phase. What could be the cause? - ✔✔Prosthetic heel is too soft
✔✔Dorsiflexing the prosthetic foot is synonymous with - ✔✔Flexing the prosthetic
socket
✔✔In reference to TT prosthetic excessive adduction of the prosthetic pylon would
cause what at midstance in gait? - ✔✔Genu varum
✔✔TT pt comes in, at heel strike the SACH prosthesis rotates externally. What would
be 1 cause of the gait deviation? - ✔✔The prosthetic heel durometer is too firm
✔✔When the prosthetic foot inset is increased, socket pressure will become more
apparent - ✔✔Lateral/distal and medial/proximal
✔✔When aligning the prosthetic socket in relations to the prosthetic foot, forces present
in the socket increase - ✔✔Anterior/proximal and posterior/distal
✔✔Upon heel strike for a BK, where are the anterior/posterior forces? -
✔✔Anterior/distal and Posterior proximal
✔✔Bench alignment of a BK begins with the - ✔✔center of the posterior brim 1/2"
lateral to the center of the heel
QUESTIONS AND ANSWERS MARKED A+
✔✔During midstance, what would cause lateral displacement exceeds 1/2"? - ✔✔Loose
socket medial lateral
Foot excessively inset
✔✔During midstance, what would cause no lateral displacement or displaced medially?
- ✔✔Foot too far outset
Pain in fibula nerve
Very short residual limb
Knee joint pathology
✔✔What would cause the knee to go into extension during heel rise? - ✔✔Toe lever
arm is too long
✔✔During toe off, what would make the patient feel like they are "dropping off"? -
✔✔Foot too posterior
Short keel in foot
Heel of shoe too high
✔✔Dorsiflexing the foot is the same as - ✔✔Flexing the socket
Heel too high
Heel too rigid
✔✔Plantarflexing the foot is the same as - ✔✔Extending the socket
Heel too short
Heel too soft
✔✔How do you correct medial distal and lateral pressure? - ✔✔Abduct socket
Inset foot
Evert foot
Internally rotate foot
✔✔How do you correct medial proximal and lateral distal pressure? - ✔✔Adduct the
socket
Outset foot
Invert foot
Externally rotate foot
✔✔How do you correct anterior distal and posterior proximal pressure? - ✔✔Extend
socket
Move socket posterior
Plantarflex foot
Shorten heel
,Soften heel bumper
✔✔How do you correct anterior proximal and posterior distal pressure? - ✔✔Flex socket
Move socket anterior
Dorsiflex socket
Higher heel
Stiffen heel bumper
✔✔A PT with TT prosthesis complains during ambulation of pressure on the anterior
distal end of the residuum. Physical examination reveals a reddened area to their
residual limb. What could be causing the pain? - ✔✔The prosthetic socket is in
excessive extension
✔✔Piston action of a BK PTB prosthesis is a result of - ✔✔Inadequate suspension
✔✔In dynamic alignment, if the knee is forced forward and the knee flexion is
exaggerated at heel contact, it means - ✔✔Excessive anterior tilt of the socket
✔✔As the outset of the foot is increased during BK alignment, pressures are increased
on the following areas of the stump - ✔✔Medial distal and lateral proximal aspect
✔✔When BK amputee controls the tendency of the knee to flex after heel strike, the
pressures are increased on the following areas of the stump - ✔✔Anterior distal and
posterior proximal
✔✔A BK returns to your office complaining that he is "stopping" in midstance and
having trouble rolling over the toe. Gait and alignment were perfect at delivery. What
could be the problem? - ✔✔He's changed his shoes and the new shoes have a lower
heel height
✔✔Foot of a BK is inset, the forces are distributed - ✔✔Medial/proximal and
lateral/distal
✔✔With a BK at midstance, where are the pressures in the socket in the sagittal plane -
✔✔Anterior/proximal and posterior/distal
✔✔A BK during static alignment, if the pylon leans laterally, the cause may be - ✔✔Too
much abduction in the socket
✔✔What is the effect of moving the socket more forward over the foot? - ✔✔Reduces
length of anterior lever of the foot
, ✔✔1 wk after del, BK pt complains of hyper-extension of the knee at midstance. Most
likely cause of this is - ✔✔The patient has changed to a shoe with a lower heel
✔✔In BK bench alignment, correct Med/Lat placement of the foot with reference to the
midline of the socket is - ✔✔Inset up to 1/2"
✔✔During dynamic alignment of a PTB prosthesis, excessive knee flexion occurs at the
beginning of heel rise. What is the best adjustment to correct the problem? - ✔✔Move
foot anterior and decrease socket flexion
✔✔During static alignment of a PTB prosthesis, the prosthesis noted that the pt's knee
was going into hyper-extension while standing, even though bench alignment had been
correct. The prosthesis should - ✔✔Check the compression of the SACH heel
✔✔TT PT comes in wearing a traditional exoskeletal PTB Prosthesis with a SACH foot.
PT states that they feel like the prosthesis is throwing her knee forward as soon as the
heel firmly contacts the ground. Prosthesis has been good for 2 years until 1 month ago.
What is the first clinical action to take at this time? - ✔✔Check to see if the pt switched
to a shoe with higher heel height compared to what she used to wear
✔✔TT PT comes in, upon examining gait you notice a mild extension moment at the
knee in stance phase. What could be the cause? - ✔✔Prosthetic heel is too soft
✔✔Dorsiflexing the prosthetic foot is synonymous with - ✔✔Flexing the prosthetic
socket
✔✔In reference to TT prosthetic excessive adduction of the prosthetic pylon would
cause what at midstance in gait? - ✔✔Genu varum
✔✔TT pt comes in, at heel strike the SACH prosthesis rotates externally. What would
be 1 cause of the gait deviation? - ✔✔The prosthetic heel durometer is too firm
✔✔When the prosthetic foot inset is increased, socket pressure will become more
apparent - ✔✔Lateral/distal and medial/proximal
✔✔When aligning the prosthetic socket in relations to the prosthetic foot, forces present
in the socket increase - ✔✔Anterior/proximal and posterior/distal
✔✔Upon heel strike for a BK, where are the anterior/posterior forces? -
✔✔Anterior/distal and Posterior proximal
✔✔Bench alignment of a BK begins with the - ✔✔center of the posterior brim 1/2"
lateral to the center of the heel
