ABC - Prosthetic Assistant Exam Review
Guide Questions and Answers Graded A+
Standard BK Alignment - Correct answer-Flexion 5°
Adduction 5°
Anterior Socket 1/2 to 1 1/4in
Inset Foot 1/2 in
External Toe Rotation 5-7°
What causes Medial Proximal and Lateral Distal Pressure (MP & LD) - Correct
answer-Abducted Socket
Inset Foot
Everted Foot
Internally Rotated Foot
What causes Medial Distal and Lateral Proximal Pressure (MD & LP) - Correct
answer-Adducted Socket
Outset Foot
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Inverted Foot
External Rotated Foot
What causes Anterior Distal and Posterior Proximal Pressure (AD & PP) - Correct
answer-Flexed Socket
Socket Too Anterior
Foot Too Posterior
Dorsiflexed Foot
Heel Too Tall or Too Stiff
What causes Anterior Proximal and Posterior Distal Pressure (AP & PD) - Correct
answer-Extended Socket
Socket Too Posterior
Foot Too Anterior
Plantarflexed Foot
Heel Too Soft or Too Short
How can you correct a pylon that is leaning medially? - Correct answer-Abduct the
socket
Evert the foot
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,How can you correct a pylon that is leaning laterally? - Correct answer-Adduct the
socket
Invert the foot
At heel strike, what causes the ball of the foot to be DF more than 1-11/2"? -
Correct answer-Stride length too long
Faulty suspension
Excessive socket flexion
At heel strike, what causes the knee to be fully extended (it should be at 5-10°)? -
Correct answer-Faulty suspension
Heel lever arm too short
Heel cushion too soft
How do you adjust a patient that is fully extended at heel strike? - Correct answer-
Lengthen heel lever arm
Stiffer heel cushion
During heel contact to flat foot, what may cause anterior distal pressure? - Correct
answer-Excessive use of knee extensors
Socket posterior brim too low
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, AP of socket too large
During heel contact to foot flat, what could cause knee "jack knives" abruptly? -
Correct answer-heel lever arm too long
During midstance, what would cause lateral trunk bend exceeds 1" at the head? -
Correct answer-Hip pathology
Foot outset too far laterally
Prosthesis too short
During midstance, what would cause wide gait? - Correct answer-Bad habit
Foot outset too far laterally
Hip abductor pathology
Prosthesis 1" or more longer
During midstance, what would cause inversion or eversion of foot walking on
lateral or medial border of shoe? - Correct answer-Improper adduction or
abduction of the socket
Loose socket
During midstance, what would cause lateral displacement exceeds 1/2"? - Correct
answer-Loose socket medial lateral
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Guide Questions and Answers Graded A+
Standard BK Alignment - Correct answer-Flexion 5°
Adduction 5°
Anterior Socket 1/2 to 1 1/4in
Inset Foot 1/2 in
External Toe Rotation 5-7°
What causes Medial Proximal and Lateral Distal Pressure (MP & LD) - Correct
answer-Abducted Socket
Inset Foot
Everted Foot
Internally Rotated Foot
What causes Medial Distal and Lateral Proximal Pressure (MD & LP) - Correct
answer-Adducted Socket
Outset Foot
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Inverted Foot
External Rotated Foot
What causes Anterior Distal and Posterior Proximal Pressure (AD & PP) - Correct
answer-Flexed Socket
Socket Too Anterior
Foot Too Posterior
Dorsiflexed Foot
Heel Too Tall or Too Stiff
What causes Anterior Proximal and Posterior Distal Pressure (AP & PD) - Correct
answer-Extended Socket
Socket Too Posterior
Foot Too Anterior
Plantarflexed Foot
Heel Too Soft or Too Short
How can you correct a pylon that is leaning medially? - Correct answer-Abduct the
socket
Evert the foot
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,How can you correct a pylon that is leaning laterally? - Correct answer-Adduct the
socket
Invert the foot
At heel strike, what causes the ball of the foot to be DF more than 1-11/2"? -
Correct answer-Stride length too long
Faulty suspension
Excessive socket flexion
At heel strike, what causes the knee to be fully extended (it should be at 5-10°)? -
Correct answer-Faulty suspension
Heel lever arm too short
Heel cushion too soft
How do you adjust a patient that is fully extended at heel strike? - Correct answer-
Lengthen heel lever arm
Stiffer heel cushion
During heel contact to flat foot, what may cause anterior distal pressure? - Correct
answer-Excessive use of knee extensors
Socket posterior brim too low
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, AP of socket too large
During heel contact to foot flat, what could cause knee "jack knives" abruptly? -
Correct answer-heel lever arm too long
During midstance, what would cause lateral trunk bend exceeds 1" at the head? -
Correct answer-Hip pathology
Foot outset too far laterally
Prosthesis too short
During midstance, what would cause wide gait? - Correct answer-Bad habit
Foot outset too far laterally
Hip abductor pathology
Prosthesis 1" or more longer
During midstance, what would cause inversion or eversion of foot walking on
lateral or medial border of shoe? - Correct answer-Improper adduction or
abduction of the socket
Loose socket
During midstance, what would cause lateral displacement exceeds 1/2"? - Correct
answer-Loose socket medial lateral
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
