Orthotic Design for the Foot and Ankle: Shoes and IMOs Flashcards
what 2 things must be considered regarding the foot/ankle complex for orthotics
- function
2. structure
three types of ankle-foot orthoses
- plastic
- metal
- hybrid
type of orthotic used at Howard PT to help plantar fasciitis
inframalleolar (IMO)
motion occurring at the midtarsal joint during supination
plantarflexion
what does AAFO stand for
Articulated Ankle Foot Orthosis
motion occurring at the tarsal/metatarsal joints during supination
adduction, inversion
three types of shoes
- lace to toe
- blucher
- balmoral
what can be considered a type of orthotic depending on features or modifications made to the design
shoe
what does IMO stand for
inframalleolar
what joint does dorsiflexion/plantarflexion occur at
talocrural
three motions composing supination
- adduction
- inversion
- plantarflexion
what motions result from controlling the triplanar motions of the foot and ankle?
pronation/supination
motions that occur at the subtalar joint
inversion and eversion
following pronation, what is happening at the:
- tibia (1)
- knee (3)
- hip (3)
- lumbar (1)
- tibia - internal rotation
- knee - flex, IR, valgus
- hip - IR, ADD, flex
- lumbar - extension
in pronation, what is the tarsal/metatarsal joint doing
abduction and eversion
SAFOs (Solid Ankle Foot Orthoses) may also be called
fixed AFO
primary and secondary forces controlling supination for an orthotic
primary force: originates lateral at lateral malleolus, directed medially
secondary force 1: orginates medial at superomedial part of orthosis, directed laterally
secondary force 2: originates medially at the first methead, projects laterally
definition of a hybrid ankle-foot orthosis
plastic footplate attached to metal calf band and bars
is the foot/ankle designed for both stability and mobility?
yes - both stability and mobility
why must the structure and function of the foot/ankle complex be considered for foot orthotics
influence on other joints in the kinematic chain
what does SAFO stand for
Solid Ankle Foot Orthosis
primary and secondary forces controlling pronation
primary: originates medially at the talus and navicular, projecting laterally
secondary 1: originates laterally at the 5th met head, projecting medially
secondary 2: originating superolateral trimline of orthosis, projecting medially
what does AFO stand for
ankle-foot orthosis
what joint does inversion/eversion occur at
subtalar
what does HAFO stand for
Hinged Ankle Foot Orthosis
motions that occur at the talocrural joint
dorsiflexion and plantarflexion
benefits of hybrid AFOs (3)
- better for heat
- helps with limbs that change volume
- increase proprioception
4 joints at the foot/ankle
- talocrural
- subtalar
- midtarsal
- tarsal/metatarsal
during supination, what is happening at:
- tibia (1)
- knee (2)
- hip (3)
- lumbar spine (1)
- tibia - ER
- knee - extension, varus
- hip - extension, ER, ABD
- lumbar - flexion
what is a metal orthosis
has a metal calf band, m&L bars
most sneakers are _________ type of shoe
balmoral
in pronation, what is the midtarsal joint doing
dorsiflexion
overall, what is the role of the midtarsal joint
to follow the talocrural
the three planes that motion will occur in for the foot and ankle
- coronal
- sagittal
- transverse
is a metal orthosis attached to a shoe or sneaker
yes
three motions that compose pronation
- abduction
- eversion
- dorsiflexion
benefit of lace to toe shoe
very easy to open wide when putting foot into shoe
the foot and ankle: ______ motion throughout the foot and ankle complex
triplanar