Orthotics 4

Question 1

characteristics of energy efficient ambulation

Answer 1

• stable in stance
• clearance in swing
• swing phase preposition
• adequate step length
• energy conservation

Question 2

impact of instability of stance on gait

Answer 2

If pt doesn’t feel stable, swing on unaffected side will compensate

Question 3

swing phase preposition

Answer 3

As we swing, is the foot placed in appropriate position as we land?

Question 4

adequate step length

Answer 4

If the person isn’t making at least a step-to, are we really helping them?

Question 5

energy conservation

Answer 5

If everything else looks great, but they’re exhausted due to heavy orthosis, is it benefitting them?

Question 6

What is the purpose of the orthotic device? (consider function)

Answer 6

Is it for function or something else?

Question 7

Other than function, an orthotic device can be useful for:

Answer 7

• benefit to being upright
• WB
• psychological advantage of getting self up

Question 8

What are the 3 rocker moments?

Answer 8

• heel
• ankle
• toe

Question 9

heel rocker moment allows:

Answer 9

• transition from swing to early stance

- controlled lowering of the foot

Question 10

ankle rocker moment allows:

Answer 10

tibial advancement from PF (flat foot) to DF

Question 11

toe rocker moment allows:

Answer 11

• body weight to transition from midfoot to forefoot

- toe rocks

Question 12

What eliminates a toe-rocker?

Answer 12

metatarsal bar

Question 13

What are the categories of orthotics?

Answer 13

• pre-fabricated
• custom-fit
• custom-molded

Question 14

pre-fabricated orthotics

Answer 14

• it’s been made already

- may change a few things to it before giving to pt

Question 15

custom-fit orthotics

Answer 15

• come in as a blank
• mold it a little to the person
• common with splinting

Question 16

custom-molded orthotics

Answer 16

• go through process of taking a negative (cast)
• cast sent away to make a positive
• material added to positive

Question 17

custom molding and 3D imaging

Answer 17

• 3D imaging of contours
• machine makes positive after sent over interwebs
• pricey, but new technology

Question 18

materials for orthotics

Answer 18

• metal
• leather
• plastics
• padding
• velcro

Question 19

types of plastics

Answer 19

• thermoplastics

- thermoset

Question 20

thermoplastic characteristics

Answer 20

• pretty rigid

- has ability to have memory and go back to its original form

Question 21

thermoset

Answer 21

• 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