Exam 5: Transfemoral Gait Deviations Flashcards

1
Q

Gait deviations you are likely to see intial contact to loading response

A
  1. Rotation of prosthetic foot at initial contact
  2. instability of prosthetic knee
  3. Foot slap
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2
Q

Problem with amputee that may lead to rotation of prosthetic foot at initial contact

A

too vigorous extension of knee by amputee

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3
Q

Problems with prosthesis that may lead to rotation of prosthetic foot at IC (2)

A
  • heel cushion too firm/ too hard PF bumper
  • loose socket
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4
Q

Problems with amputee that may result in instability of P.knee during IC and LR

A
  • weak hip extensors
  • significant flexion contracture- the more severe the contracture, the earlier in stance it cause instability; therefore most contractures cause problems in or near mid-stance
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5
Q

Problems with prosthetic that may result in instability of P.knee during IC and LR (4)

A
  • unstable knee (too far anterior to Tr-Kn-An line)
  • too firm heel cushion or PF bumper
  • insufficient flexion in socket
  • heel too high or excessive dorsiflexion
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6
Q

Reasons foot slap may occur (2)

A

Prosthetic: Posterior bumper too soft

Amputee: forceful driving of prosthesis into ground to ensure knee stability

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7
Q

Gait Deviations you are likely to observe in Mid-stance

A
  1. Ipsilateral bending of trunk
  2. Contralateral bending of trunk
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8
Q

Problems with the amputee that may cause I-lat trunk leaning during mid-stance

A
  • very short RL
  • habit/fear/poor balance
  • weak abductors
  • abduction contracture
  • habit or poor gait training (inadequate weight shifting)
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9
Q

Problems with the prosthesis that may cause I-lat trunk leaning during mid-stance (4)

A
  • too short
  • lateral wall allows too much abduction of femur
  • foot outset
  • distal lateral RL pain
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10
Q

Problem causing contralateral trunk lean during

mid-stance

A

cotch pressure

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11
Q

Gait Deviation likely to be observed terminal stance to pre-swing

A

Drop-off at end of stance

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12
Q

Problems that may cause drop-off at end of stance

A

Amputee: nothing

Prosthesis:

  • inadequate limitation of DF
  • too soft DF bumper
  • toe break too far posterior
  • socket too anterior on pilon
  • foot too posterior
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13
Q

Gait deviations you are likely to see dring intial swing (4)

A
  1. excessive heel rise
  2. excessive pistoning
  3. lateral whip
  4. medial whip
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14
Q

Problems with amputee that may cause excessive heel rise during initial swing

A

forcible hip flexion

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15
Q

Problems with prosthesis that may cause excessive heel rise during initial swing (3)

A
  • insufficient friction at knee
  • inadequate extension aid
  • improper knee selection
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16
Q

Problems that may cause excessive pistoning during intial swing

A

Amputee: may occur w/ lg. flabby RL w/ poor muscle control

Prosthesis: pt. not seated in socket (socket too big or improperly donned)

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17
Q

Problem with amputee that may cause lateral whip during initial swing

A

improper donning

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18
Q

Problem with prothesis that may cause lateral whip during initial swing

A

too much IR at knee

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19
Q

Problem with amputee that may cause medial whip during initial swing

A

improper donning

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20
Q

Problems with prothesis that may cause medial whip during initial swing (2)

A
  • too much ER at knee
  • socket too loose
21
Q

Gait deviations that may be observed during mid-swing (3)

A
  1. vaulting
  2. circumduction
  3. abducted gait
22
Q

Where is the pressure focused during an abducted gait deviation?

A

abducted gait causes excessive distal. lateral pressure

23
Q

Problems with the amputee that may cause vaulting during mid-swing (4)

A
  • habit
  • poor balance/ poor knee control, ex: weak hip extensors
  • fear of stubbing prosthetic toe
  • weak hip flexors or improper gait training for intiation of flexion
24
Q

Problems with prothesis that may cause vaulting during mid-swing (4)

A
  • too long
  • inadequate suspension
  • too much knee friction leading to insufficient knee flexion
  • excessive built-in knee stability (such as knee joint too far posterior to TKA line)
25
Q

Problems with amputee that may cause circumduction during mid-swing (3)

A
  • habit
  • weak hip extensors
  • insecurity regarding knee control
26
Q

Problem with prosthesis that may cause circumduction during mid-swing

A

too much stability at knee joint (too much friction or knee posterior to TKA line)

27
Q

Problems with amputee that may cause an abducted gait during mid-swing (4)

A
  • abduction contracture
  • habit
  • fear (such as results from weak hip extensors)
  • RL pain (crotch pressure)
28
Q

Problems with prosthesis that may cause an abducted gait during mid-swing (3)

A
  • too long
  • too high medial wall
  • too much foot outset or valgus alignment between shank and socket may mimic this
29
Q

Gait deviations that may be observed during terminal swing and in general (3)

A

Terminal Swing

  • terminal impact

General

  • uneven timing (short prosthetic stance)
  • uneven arm swing
30
Q

What is terminal impact?

A

The prosthetic shank comes to a sudden stop with a visible and possibly audible impact as the knee reaches full extension

31
Q

Problems with amputee that may cause terminal impact during terminal swing (2)

A
  • intentional- to get audible cue
  • too vigorous hip flexion followed by strong hip extension
32
Q

Problems with prosthesis that may cause terminal imact at terminal swing (2)

A
  • insufficient friction at knee
  • too strong extension aid
33
Q

Problems with amputee that may cause uneven timing (3)

A
  • weakness/unstable knee
  • poor balance/insecurity
  • pain
34
Q

Problems with prosthesis that may cause uneven timing (5)

A
  • socket fits poorly causing pain
  • alignment instability
  • excessive DF
  • poor suspension
  • unaccommodated hip flexion contracture
35
Q

Problems with amputee that may cause uneven arm swing (3)

A
  • habit
  • poor balance
  • insecurity
36
Q

Problems with prosthesis that may cause uneven arm swing (2)

A
  • occassional due to stump pain (that’s what Mincer has on the sheet- seems weird)
  • inadequate suspension
37
Q

Some sage advice

A
38
Q

What gait deviations might you observe in a transfem amputee with weak hip extensors? (3)

A
  1. instability of prosthetic knee during IC to LR phase
  2. circumduction during mid-swing
  3. abducted gait during mid-swing (fear component with this)
39
Q

What gait deviations might you see in a transfem amptee with an abduction contracture? (2)

A
  1. ipsilateral bening of trunk during mid-stance
  2. abducted gait during mid-swing
40
Q

What gait deviations might you see in a transfem amputee with poor balance and/or fear? (5)

A
  1. ipsilateral trunk bending during mid-stance
  2. vaulting during mid-swing
  3. abducted gait during mid-swing
  4. uneven timing (short prosthetic stance)
  5. uneven arm swing
41
Q

What gait deviations might you see if the transfem prosthesis has too much DF? (3)

A
  1. instability of prosthetic knee during IC to LR
  2. drop-off at end of stance during terminal swing to mid-stance
  3. uneven timing (short prosthetic stance)
42
Q

What gait deviation might you see in a transfem amputee with a significant hip flexion contracture?

A

instability of the prosthetic knee during IR to LR

43
Q

What gait deviation are you likely to see in a transfem amputee with weak hip flexors?

A

Vaulting during mid-swing

44
Q

What gait deviations might you see in a transfem prothesis if the socket is too loose? (2)

A
  1. rotation of prosthetic foot at IC
  2. medial whip
45
Q

What gait deviations might you see if the transfem prosthesis has a heel cushion that is too firm or PF bumper is too hard? (2)

A
  1. rotation of prosthetic foot at IC
  2. instability of prosthetic kneeduring IC to LR
46
Q

What gait deviation might you see in transfem prothesis if the posterior bumper is too soft

A

foot slap during IC to LR

47
Q

What gait deviation might you see of the transfem prosthesis is too short?

A

ipsilateral trunk bending during mid-stance

48
Q

Gait deviations you are likely to see due to lack of or poor gait training according to Mincer (3)

A
  • instability of prosthetic knee during IC-LR
  • I-lat trunk bending during midstance
  • vaulting during mid-swing
49
Q

Gait deviation that have nothing to do with the amputee and we can only blame the prosthesis (1)

A

Drop-off