PEDORTHICS Final Exam Help
what midfoot bone is relieved by adding the ST groove? - Answer-navicular
the triplanar joints of the foot are parallel to the cardinal planes t/f - Answer-false - these joints are
non-parallel
which joint of the foot is a composite joint with 2 different joint axes? - Answer-MTJ (midtarsal joint)
what is true for the medial foot column? - Answer-more flexible than the lateral foot column
which joint of the foot is the primary provider of DF and PF? - Answer-talocrural joint, TCJ
the primary motions of the TCJ is PF and DF. because the joint axis is pitched 10 degrees from the
transverse plane, what are the secondary motions? - Answer-this ADducts and inverts. Or, it ABducts
and everts
,the "ST modification" prevents the sustentaculum tali from collapsing laterally, which prevents calcaneal
varus. t/f - Answer-false, this modification helps the outer sides, and stops this problem
the lateral column of the foot typically accepts what percentage of force throughout stance phase? -
Answer-30%
this bony prominence may be a problem of concern for patients with ERD - Answer-cuboid
the STJ include articulations of which bones? - Answer-calcaneus and talus
the subtalar joint usually allows for what degrees of motion in a non-pathological foot? - Answer-30
degrees inversion, 10 degrees eversion
internal rotatory deformity (IRD) includes these 3 motions - Answer-1. calcaneal valgus,
2. midfoot pronation
3, forefoot abduction
external rotatory deformity (ERD) includes these 3 motions - Answer-1. calcaneal varus
2. midfoot supination
3. forefoot adduction
The orthotic synonym of IRD: - Answer-pes planus
In order to make certain that the foot is in subtalar neutral - Answer-there must be equal to no pressure
on either side of the talus
,is it possible to block motion in one cardinal plane without altering motion in either of the other cardinal
planes? - Answer-no, this isolation of triplanar motion is impossible.
extrinsic posting?
intrinsic posting? - Answer-extrinsic posting? is adding a wedge on the outside
intrinsic posting is changing the model itself.
if you remove material from the lateral aspect of the heel to reduce varus, it is extrinsic posting? or
intrinsic posting? - Answer-then this is an intrinsic modification
when you add plastic to the lateral plantar side of the foot orthosis heel you are doing: extrinsic posting?
intrinsic posting? - Answer-an extrinsic modification
when you add plaster material to the medial aspect of the metatarsal portion of the mold, then you are
doing: extrinsic posting? intrinsic posting? - Answer-an intrinsic modification
If the orthotist desires an intrinsic and extrinsic post that will decelerate pronation at initial contact,
which side of the heel should be shaved down in the positive plantar model and which side should have
plastic added to the orthosis? - Answer-medial side
to have the greatest effect the Morton's extension modification terminates: - Answer-just beyond the
end of the 1st toe
what is considered the most diabetic friendly insert material? - Answer-soft plastazote
when does shock absorption occur during the gait cycle? - Answer-initial contact to loading response (IC
to LR)
, during weight bearing, transferring weight to stance foot (mid-stance) is approximately what percent of
the body weight in force? - Answer-115%
during weight bearing, when the heel is lifting off the floor it is approximately what percent of the body
weight in force? - Answer-110%
in normal gait, a patient's foot completes its transformation into a rigid foot lever when? - Answer-just
prior to midstance
in normal gait, the calcaneus will be in what position on heel strike? (this is IC) - Answer-inverted
in which stage of gait is the foot in a position for surface adaptation? - Answer-midstance
the biomechanical mechanisms that position the foot for surface adaptation are - Answer-subtalar joint
pronation, midtarsal joint unlocks (in parallel)
the biomechanical mechanisms that position the foot for more effective propulsion are - Answer-
subtalar joint supination, midtarsal joint locks (non-parallel)
the vamp is - Answer-flat front top surface of shoe
the tongue is - Answer-the flap between the area with holes on the shoe
the counter is - Answer-where the heel rests back upon
the footbed is - Answer-the curved top in the sole of the shoe
what midfoot bone is relieved by adding the ST groove? - Answer-navicular
the triplanar joints of the foot are parallel to the cardinal planes t/f - Answer-false - these joints are
non-parallel
which joint of the foot is a composite joint with 2 different joint axes? - Answer-MTJ (midtarsal joint)
what is true for the medial foot column? - Answer-more flexible than the lateral foot column
which joint of the foot is the primary provider of DF and PF? - Answer-talocrural joint, TCJ
the primary motions of the TCJ is PF and DF. because the joint axis is pitched 10 degrees from the
transverse plane, what are the secondary motions? - Answer-this ADducts and inverts. Or, it ABducts
and everts
,the "ST modification" prevents the sustentaculum tali from collapsing laterally, which prevents calcaneal
varus. t/f - Answer-false, this modification helps the outer sides, and stops this problem
the lateral column of the foot typically accepts what percentage of force throughout stance phase? -
Answer-30%
this bony prominence may be a problem of concern for patients with ERD - Answer-cuboid
the STJ include articulations of which bones? - Answer-calcaneus and talus
the subtalar joint usually allows for what degrees of motion in a non-pathological foot? - Answer-30
degrees inversion, 10 degrees eversion
internal rotatory deformity (IRD) includes these 3 motions - Answer-1. calcaneal valgus,
2. midfoot pronation
3, forefoot abduction
external rotatory deformity (ERD) includes these 3 motions - Answer-1. calcaneal varus
2. midfoot supination
3. forefoot adduction
The orthotic synonym of IRD: - Answer-pes planus
In order to make certain that the foot is in subtalar neutral - Answer-there must be equal to no pressure
on either side of the talus
,is it possible to block motion in one cardinal plane without altering motion in either of the other cardinal
planes? - Answer-no, this isolation of triplanar motion is impossible.
extrinsic posting?
intrinsic posting? - Answer-extrinsic posting? is adding a wedge on the outside
intrinsic posting is changing the model itself.
if you remove material from the lateral aspect of the heel to reduce varus, it is extrinsic posting? or
intrinsic posting? - Answer-then this is an intrinsic modification
when you add plastic to the lateral plantar side of the foot orthosis heel you are doing: extrinsic posting?
intrinsic posting? - Answer-an extrinsic modification
when you add plaster material to the medial aspect of the metatarsal portion of the mold, then you are
doing: extrinsic posting? intrinsic posting? - Answer-an intrinsic modification
If the orthotist desires an intrinsic and extrinsic post that will decelerate pronation at initial contact,
which side of the heel should be shaved down in the positive plantar model and which side should have
plastic added to the orthosis? - Answer-medial side
to have the greatest effect the Morton's extension modification terminates: - Answer-just beyond the
end of the 1st toe
what is considered the most diabetic friendly insert material? - Answer-soft plastazote
when does shock absorption occur during the gait cycle? - Answer-initial contact to loading response (IC
to LR)
, during weight bearing, transferring weight to stance foot (mid-stance) is approximately what percent of
the body weight in force? - Answer-115%
during weight bearing, when the heel is lifting off the floor it is approximately what percent of the body
weight in force? - Answer-110%
in normal gait, a patient's foot completes its transformation into a rigid foot lever when? - Answer-just
prior to midstance
in normal gait, the calcaneus will be in what position on heel strike? (this is IC) - Answer-inverted
in which stage of gait is the foot in a position for surface adaptation? - Answer-midstance
the biomechanical mechanisms that position the foot for surface adaptation are - Answer-subtalar joint
pronation, midtarsal joint unlocks (in parallel)
the biomechanical mechanisms that position the foot for more effective propulsion are - Answer-
subtalar joint supination, midtarsal joint locks (non-parallel)
the vamp is - Answer-flat front top surface of shoe
the tongue is - Answer-the flap between the area with holes on the shoe
the counter is - Answer-where the heel rests back upon
the footbed is - Answer-the curved top in the sole of the shoe
