TT

Question 1

which gait deviations can be caused if the foot is too far outset

Answer 1

lateral trunk bending exceeds 1 in at head

Question 2

what muscle group contracts to control the rate of knee flexion?

Answer 2

quads

Question 3

what cause of deviation triggers drop off to occur during TT gait?

Answer 3

toe lever too short

Question 4

main inverters of the foot are

Answer 4

tibialis muscles

Question 5

during dynamic alignment the patient notes that there is excessive hyperextension late in stance. how should you correct this problem?

Answer 5

move the foot more posterior

Question 6

at toe off the patient experiences anterior loss of support or drop off. What is the most likely cause?

Answer 6

foot too posterior

Question 7

when is a slight medial lean acceptable?

Answer 7

when patient is using a cane

Question 8

during dynamic fitting you notice that there is excessive lateral gapping with the TT px. what is the best solution?

Answer 8

decrease inset & pad liner medially

Question 9

the PTB-SC, SP suspends over what anatomic landmarks?

Answer 9

patella & medial femoral condyle

Question 10

the wooden keel on a sack foot replaces what muscle function?

Answer 10

Plantar flexors Late in stance (MSt to toe off)

Question 11

you observe lateral lean in your Berkeley alignment fixture. how do you fix this?

Answer 11

adduct the socket

Question 12

a patient c/o proximal lateral pressure. What should you do to fix this?

Answer 12

increase inset

Question 13

why must the partial foot px extend to the MTP level?

Answer 13

must load entire area or will impinge on tibia late in stance

Question 14

an amputation at the metatarsal-tarsal joints is referred to as

Answer 14

lisfranc

Question 15

which solution is best for a partial foot px to prevent distal impingement with:

Answer 15

rigid toe plate to move reaction point distal, soft foam filler & distal “toe break”

Question 16

with a partial foot amputation the foot typically assumes an

Answer 16

equino-varus orientation because the DFs have been cut

Question 17

why must the wall of the PTB interface be high enough to enclose the femoral condyles?

Answer 17

to increase the load bearing area for various thrust in alignment

Question 18

what can be done to relieve lateral distal pressure?

Answer 18

decrease the inset of the foot to the interface

Question 19

a patient experiences anterior distal pain. How to fix this?

Answer 19

pf the foot & move it anterior

Question 20

the heel wedge on a SACH foot functionally replaces what muscles?

Answer 20

Dorsiflexors while the keel is PFs

Question 21

a patient enters your clinic c/o patellar tendon pain. he was fitted initially successfully & had no problems until now. what is most likely the problem?

Answer 21

patient is using shoes with lower heel height. use a heel wedge to get top of foot level.

Question 22

the hip extensors

Answer 22

extend the hip & flex the knee

Question 23

why is the px knee externally rotated?

Answer 23

to simulate the internal rotation of the femur during swing

Question 24

why is the px knee externally rotated?

Answer 24

to simulate the internal rotation of the femur during swing

Question 25

the muscles which pass posterior to the medial malleolus at the ankle to:

Answer 25

invert & plantar flex the foot

Question 26

which muscles flexes at 2 joints:

Answer 26

biceps femoris

Question 27

in a total contact suction socket, edema is prevented by:

Answer 27

a firm negative pressure during swing phase

Question 28

1 week after receiving a new bk px, pt c/o hyperextension of the knee at mid stance. the most likely cause

Answer 28

lower heel height

Question 29

the anterior stop in a single axis foot substitutes for what muscle?

Answer 29

gastrocnemius