Gait and Orthoses Flashcards

1
Q

Orthosis

A
  • external device worn to restrict or assist motion or to transfer load from one area to another
  • Orthosis (noun)
  • Orthotic (adjective)
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2
Q

Orthotist

A

-member of the health care team who designs and fabricates orthotic devices, and evaluates patients for devices

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3
Q

Essential Task Requirements of Gait

A
  • Progression (moving in desired direction)
  • Stability (postural control)
  • Adaptability (meet environmental/task demands
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4
Q

AFO

A
  • Primary Aim: control foot motion in SAGITTAL plane
  • 2* aim: control med/lat foot motion, control knee
  • plastic/metal
  • shelf/custom
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5
Q

Plastic Orthosis

A
  • upright shell with calf band

- polyethylene/polypropylene

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6
Q

Benefits of Plastic Orthoses

A
  • Interchangeable with different shoes
  • relatively lightweight
  • good motion control
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7
Q

Limitations of Plastic Orthoses

A
  • Hot

- Take up space in shoe

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8
Q

Metal Upright Orthosis

A

-Consists of shoe, stirrup, calf band

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9
Q

Benefits of Metal Upright Orthoses

A
  • Accommodate changing limb volume

- cooler

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10
Q

Limitations of Metal Upright Orthoses

A

-Patient restricted to one pair of shoes

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11
Q

Posterior Leaf Spring

A
  • (PLS)
  • Thin narrow shell that allows some motion at ankle
  • Stance: calf shel moves forward over footplate
  • Swing: calf shell springs back to facilitate foot clearance
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12
Q

Articulating AFO

A
  • joint allows for some motion
  • Better adaptability for pt
  • wider, heavier
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13
Q

Articulating AFO’s can control movement by:

A
  • Blocking motions with stops

- Assisting motion with springs

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14
Q

Non-articulating AFO

A
  • limits motion at ankle

- for ankle and knee weakness

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15
Q

Controlling the knee with an AFO

A
  • Floor reaction AFO

- Traditional AFO

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16
Q

Floor Reaction AFO

A
  • Set in PF
  • Anterior shell/band (prox tibia) helps push back tibia
  • Good for quad weakness to decrease knee buckling
17
Q

Tone Reducing AFO

A
  • often for children with CP and adults with spasticity
  • foot plate and upright designed to put pressure on PF and ankle invertors to reduce tone
  • may have extended footplate to control toes
18
Q

KAFO

A
  • control knee, blocking knee flexion in stance
  • can help correct genu varus/valgus
  • can be unblocked for sitting
19
Q

KAFO Limitations

A

-bulky, heavy, less variability of movement, can’t respond to perturbations, vault/hip hike/circumduct to clear foot

20
Q

HKAFO

A
  • blocks knee and hip movements

- Limitations: heavy, large, no balance strategies, expensive, not functional walkers (except kids)

21
Q

Reciprocating Gait Orthosis

A
  • RGO
  • allows for unilateral stepping
  • for kids
  • post + lat weight shift on one side advances opposite LE
22
Q

T1-T3 Lesion

A
  • HKAFO

- “Drag to” Gait

23
Q

T4-T6 Lesion

A
  • HKAFO

- “drag to” gait

24
Q

T6-T8 Lesion

A

-“swing to” gait

25
Q

T9-T12 Lesion

A
  • HKAFO
  • KAFO at lower levels
  • “swing through” gait
26
Q

L2-L4 Lesion

A
  • KAFO
  • Loftstrand Crutches
  • 4 Point Gait
27
Q

L4-L5 Lesion

A
  • AFO
  • Crutches/Cane
  • 2/4 point gait