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Orthotic Fitter > Biomechanics - Lower Extremity > Flashcards

Biomechanics - Lower Extremity Flashcards

1
Q

Bending parts of a joint so that the angle between them is decreased

A

Flexion

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2
Q

Straightening parts of a joint so that the angle between them is increased

A

Extension

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3
Q

3 Cardinal Planes

A

Sagittal, Frontal and Transverse Planes

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4
Q

The motion of a body part away from midline

A

Abduction

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5
Q

The motion of a body part towards midline

A

Adduction

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6
Q

The movement of the foot upwards towards the ankle, normal range 10-20 degrees

A

Dorsiflexion

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7
Q

Minimum degree of dorsiflexion for normal gate

A

10 degrees

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8
Q

Opposite of Dorsiflexion

A

Plantar Flexion

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9
Q

Dorsiflexion occurs in which Cardinal Plane

A

Sagital

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10
Q

The elevation of the inner border of the foot

A

Inversion

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11
Q

Normal range of motion in Inversion

A

20 degrees

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12
Q

Minimum degree of inversion for normal gate

A

4-6 degrees

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13
Q

Eversion occurs in which Cardinal Plane

A

Frontal

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14
Q

Elevation along the outer border of the foot

A

Eversion

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15
Q

Normal range of motion in Eversion

A

10 degrees

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16
Q

Minimum degree of Eversion for nomal gate

A

4-6 degrees

17
Q

Pronation is a tri-plane motion consisting of:

A

1) Dorsiflexion in the Sagital Plane
2) Eversion in the Frontal Plane
3) Abduction in the Transverse Plane

18
Q

Supination is a tri-plane motion consisting of:

A

1) Plantar Flexion in the Sagital Plane
2) Inversion in the Frontal Plane
3) Adduction in the Transverse Plane

19
Q

60% of Gait Cycle

A

Stance Phase

20
Q

40% of Gait Cycle

A

Swing Phase

21
Q

Heel strike of one limb to toe off of same limb

A

Stance Phase

22
Q

Toe off to just prior to heel strike

A

Swing Phase

23
Q

One lower extremity beginning its Swing Phase and the Opposite lower extremity ending its Swing Phase

A

SIngle Limb Support

24
Q

2 periods of Single Limb support and 2 periods of Double Limb support

A

Normal Gate Cycle

25
Q

One lower extremity beginning Stance Phase and one lower extremity finishing Stance Phase

A

Double Limb Support

26
Q

Stance Phase consists of:

A
  1. Heel Strike
  2. Foot Flat
  3. Midstance
  4. Heel Off
  5. Toe Off
27
Q

Point where body weight passes directly over the supporting limb

28
Q

Just after the referenced limb toe leaves the ground until the point when the swinging leg is under the body

A

Acceleration

29
Q

Stride Length

A

Heel strike of one limb to heel strike of same limb

30
Q

Step Length

A

Heel strike of one limb to heel off of the opposite lime

Orthotic Fitter (3 decks)

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