TT Flashcards
which gait deviations can be caused if the foot is too far outset
lateral trunk bending exceeds 1 in at head
what muscle group contracts to control the rate of knee flexion?
quads
what cause of deviation triggers drop off to occur during TT gait?
toe lever too short
main inverters of the foot are
tibialis muscles
during dynamic alignment the patient notes that there is excessive hyperextension late in stance. how should you correct this problem?
move the foot more posterior
at toe off the patient experiences anterior loss of support or drop off. What is the most likely cause?
foot too posterior
when is a slight medial lean acceptable?
when patient is using a cane
during dynamic fitting you notice that there is excessive lateral gapping with the TT px. what is the best solution?
decrease inset & pad liner medially
the PTB-SC, SP suspends over what anatomic landmarks?
patella & medial femoral condyle
the wooden keel on a sack foot replaces what muscle function?
Plantar flexors Late in stance (MSt to toe off)
you observe lateral lean in your Berkeley alignment fixture. how do you fix this?
adduct the socket
a patient c/o proximal lateral pressure. What should you do to fix this?
increase inset
why must the partial foot px extend to the MTP level?
must load entire area or will impinge on tibia late in stance
an amputation at the metatarsal-tarsal joints is referred to as
lisfranc
which solution is best for a partial foot px to prevent distal impingement with:
rigid toe plate to move reaction point distal, soft foam filler & distal “toe break”
with a partial foot amputation the foot typically assumes an
equino-varus orientation because the DFs have been cut
why must the wall of the PTB interface be high enough to enclose the femoral condyles?
to increase the load bearing area for various thrust in alignment
what can be done to relieve lateral distal pressure?
decrease the inset of the foot to the interface
a patient experiences anterior distal pain. How to fix this?
pf the foot & move it anterior
the heel wedge on a SACH foot functionally replaces what muscles?
Dorsiflexors while the keel is PFs
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?
patient is using shoes with lower heel height. use a heel wedge to get top of foot level.
the hip extensors
extend the hip & flex the knee
why is the px knee externally rotated?
to simulate the internal rotation of the femur during swing
why is the px knee externally rotated?
to simulate the internal rotation of the femur during swing
the muscles which pass posterior to the medial malleolus at the ankle to:
invert & plantar flex the foot
which muscles flexes at 2 joints:
biceps femoris
in a total contact suction socket, edema is prevented by:
a firm negative pressure during swing phase
1 week after receiving a new bk px, pt c/o hyperextension of the knee at mid stance. the most likely cause
lower heel height
the anterior stop in a single axis foot substitutes for what muscle?
gastrocnemius
