Lecture 9 - Gait Analysis Flashcards

1
Q

what is gait analysis

A

the analysis of body segments through space and time during locomotion

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2
Q

walking is often assessed to :

A
  • monitor rehabilitation
  • detect motor dysfunction
  • evaluate equipment
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3
Q

running often assessed to :

A
  • help avoid potential injury
  • improve comfort
  • improve performance
  • evaluate equipment
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4
Q

what is one gait cycle

A

ground contact to next ground contact of the same foot

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5
Q

what is stance phase

A

ground contact to toe off

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6
Q

what if swing phase

A

toe off to ground contact

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7
Q

what in walking is replaced by what in running

A

double stance in walking is replaced by flight phase in running

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8
Q

what are the key events in stance phase (walking)

A
  • ground strike
  • foot flat
  • mid stance
  • heel off
  • toe off
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9
Q

what is ground strike in stance phase (walking)

A

initial ground contact usually with heel

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10
Q

what is foot flat in stance phase (walking)

A

heel down, foot eversion / pronation

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11
Q

what is mid stance in stance phase (walking)

A

support foot under pelvis, end of loading response, propulsion begins

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12
Q

what is heel off in stance phase (walking)

A

knee flexes usually with toe extension

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13
Q

what is toe off in stance phase (walking)

A

foot leaves the ground

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14
Q

what are the sub phases of swing phase (walking and running)

A
  • early swing
  • mid swing
  • late swing
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15
Q

what is early swing (sub phase of swing phase - walking and running)

A

hip and knee are flexing

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16
Q

what is mid swing (sub phase of swing phase - walking and running)

A

foot swings under pelvis, max knee flexion, hip still flexing

17
Q

what is late swing (sub phase of swing phase - walking and running)

A

knee extending, hip stops flexing and laterally rotates

18
Q

what is the difference in balance between walking and running

A

balance more important in running, no double stance

19
Q

what is the difference in vertical displacement between running and walking

A

greater vertical displacement in running because of flight phase

20
Q

what is the difference in muscle energy between walking and running

A

muscles must generate and absorb more energy in running

21
Q

what is the difference in hip and knee extension in walking and running

A

greater hip extension before ground strike, knee extended at toe off

22
Q

what is step length

A

distance between consecutive ground strikes

23
Q

what is stride length

A

distance between consecutive ground strikes of same leg

24
Q

what is foot angle in gait analysis

A

orientation of foot (long axis) relative to line of progression

25
what is base (step) width
mediolateral distance between ground strikes (from heel) of each foot
26
what is step or stride time
time between ground strikes
27
what is single or double support time
time body is supported by one to two legs
28
what is swing or flight time
time one or both legs are not in ground contact
29
what is stride frequency
strides per second