Orthotics 4 Flashcards
characteristics of energy efficient ambulation
- stable in stance
- clearance in swing
- swing phase preposition
- adequate step length
- energy conservation
impact of instability of stance on gait
If pt doesn’t feel stable, swing on unaffected side will compensate
swing phase preposition
As we swing, is the foot placed in appropriate position as we land?
adequate step length
If the person isn’t making at least a step-to, are we really helping them?
energy conservation
If everything else looks great, but they’re exhausted due to heavy orthosis, is it benefitting them?
What is the purpose of the orthotic device? (consider function)
Is it for function or something else?
Other than function, an orthotic device can be useful for:
- benefit to being upright
- WB
- psychological advantage of getting self up
What are the 3 rocker moments?
- heel
- ankle
- toe
heel rocker moment allows:
- transition from swing to early stance
- controlled lowering of the foot
ankle rocker moment allows:
tibial advancement from PF (flat foot) to DF
toe rocker moment allows:
- body weight to transition from midfoot to forefoot
- toe rocks
What eliminates a toe-rocker?
metatarsal bar
What are the categories of orthotics?
- pre-fabricated
- custom-fit
- custom-molded
pre-fabricated orthotics
- it’s been made already
- may change a few things to it before giving to pt
custom-fit orthotics
- come in as a blank
- mold it a little to the person
- common with splinting
custom-molded orthotics
- go through process of taking a negative (cast)
- cast sent away to make a positive
- material added to positive
custom molding and 3D imaging
- 3D imaging of contours
- machine makes positive after sent over interwebs
- pricey, but new technology
materials for orthotics
- metal
- leather
- plastics
- padding
- velcro
types of plastics
- thermoplastics
- thermoset
thermoplastic characteristics
- pretty rigid
- has ability to have memory and go back to its original form
thermoset
- once it’s put in its shape, it’s there
- can cut things off or take an extremely hot heat gun and melt it
- commonly used with LE
- will not warp in hot temp
