Gait Deviations

Question 1

knee extension at IC

Answer 1

• faulty suspension
• insufficient flexion
• foot too anterior

Question 2

excessive knee flexion at IC

Answer 2

• faulty suspension
• flexion contracture

Question 3

unequal step length

Answer 3

• faulty suspension
• patient cause (fear, pain)

Question 4

knee extended in LR

Answer 4

• heel too soft
• PF bumper too soft (foot slap)
• heel lever too short
• insufficient socket flexion; excess ankle PF
• shoe heel < foot heel (posterior lean)
• excessive knee/hip extensor activation

Question 5

abrupt knee flexion in LR

Answer 5

• heel stiff
• PF bumper too firm
• heel lever too long
• excess socket flexion; excess ankle PF; flexion contracture
• shoe heel > foot heel (anterior lean)
• weak quads

Question 6

excess varus moment in MS

Answer 6

• foot too inset
• socket ML too large
• excess socket abduction (lateral lean pylon and medial aspect of foot on floor)

Question 7

excess valgus moment in MS

Answer 7

• foot too outset
• excess socket adduction (medial lean pylon and lateral aspect of foot on floor)
• antalgic gait

Question 8

excess extension moment in TS (hill climbing)

Answer 8

• foot too anterior (socket posterior)
• insuficient socket flexion or foot too PF
• keel too rigid
• foot too long
• shoe heel too low (posterior lean)
• weak quads

Question 9

abrupt knee flexion in TS (drop off)

Answer 9

• foot too posterior (socket anterior)
• socket too flexed; foot too DF
• keel too soft
• foot too short
• shoe heel too high (anterior lean)