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pt management 3 > biomech of pro gait > Flashcards

biomech of pro gait Flashcards

1
Q

what is the weight acceptance part of gait

A

initial contact
loading

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2
Q

what is the stance/single limb support part of gait

A

mid swing

terminal swing

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3
Q

what is the swing/limb advancement part of gait

A

pre swing
initial swing
mid swing
terminal swing

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4
Q

what kind of moment is it at initial contact

A

knee ext moment

varus moment

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5
Q

IC - ground reaction force

A

in front of hip - pulling into flexion

behind knee - pulling into ext

behind foot - pulling into PF

the body is trying to resists these moement created by the ground reaction force

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6
Q

Varus moment - ground reaction force

A
  • Medial knee – varus moment
  • Medial hip – abductor, fall away from the line
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7
Q

Transtibial IC

A

the PF torque is transitioned up the whole chain

The prothesis will pull the leg forward and push them into knee flexion

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8
Q

Transfemoral IC

A

cannot use quad to compensate for torque moment

  • Use glutes, hamstrings pull the femur into extension
  • Fire the glute and push back against the socket
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9
Q

loading response GRF

A

knee flexion moment
ankle - PF

knee - flex

hip - ext

Varus response remains

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10
Q

mid stance moments

A

knee flex and ext moments

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11
Q

terminal stance moments

A

initial heel rise and knee ext moment

decreased varus moment

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12
Q

pre swing moments

A

heel rise/toe off and knee flex moment

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13
Q

what are factor that infulence gait

A

eitology: dysvascualr or trauma

location: tib or femur

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14
Q

what was the greatest O2 consumption

A

transfemoral and dysvascular

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15
Q

what is normal O2 consumption

A

.15%

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16
Q

what is the goal in amb with pro

A

stabilize the knee without limiting mobility

17
Q

alignment term - bench

A

the initial alignment produced before pt fitting

18
Q

alignment term - static

A

with pro on pt some WB before walking

19
Q

alignment term - dynamic

A

have the pt walk with pro

different gait characteristic will indicate areas of misalignment

20
Q

where does the kinematic chain close

A

the wall of the pro socket

important for socket pressure and skin integrity

21
Q

what are some factors that will influence transtibial gait - A-P stability

A

knee ext

hip ext

limb length

ROM

activity level

22
Q

what are some factors that will influence transtibial gait - M-L stability

A

co-contraction of quads and hamstring from IC > mid stance

timing of hip abd

ligamentous stability of the knee

23
Q

what is socket flexion

A

bench

the proximal end of the socket is ant tilted on the pylon in regards to the foot flat on the floor

24
Q

what is the goals of socket flexion and lateral tilt of the socket

A

max WB of the residual limb

25
Q

what is the lateral tilt of the socket for

A

to max contact with the residual limb for max weight bearing

26
Q

what does too much transtib socket flexion do

A

excessive knee flexion moment

require excessive knee ext (quads) strength - this increases pressure of the ant distal and post proximal parts of the residual limb

the occurs when the chain in closed

27
Q

what does malalignment of the lateral tilt or the foot position on the socket do

A

creates an excessive varus of valgus moment at the knee

28
Q

how do we inspect for a M-L misalignment transtib

A

foot flat in midstance

29
Q

what are some factors that will influence transfemoral gait - A-P stability

A

hip extensors/core

pelvic anterior translations in midstance

limb length

ROM

activity level

ability to chnage cadence

30
Q

what are some factors that will influence transtibial gait - M-L stability

A

limb length

trong isp abd

strong core

activity level

31
Q

what alignment for transfemoral do we use to max A-P stability

A

initial socket flexion

32
Q

what does initial socket flexion facilitate

A

use of glute max

max strength at mid range

places the knee center post to the hip and ankle in stance

33
Q

what aligment does a hip flexion contracture cause

A

the distal femur to sit anterior to the hip and the foot

34
Q

mid stance with a hip flexion contracture

A

knee flex moment?

35
Q

what is the initial bench aligment of the tranfemoral in the M-L view

A

hip abd

36
Q

what does a hip abd alignment allow for

A

takes advantage of hip abd and max contact with the shaft of the femur

37
Q

right glute weakness what are we going to see

A

pelvic drop - right

lateral trunk lean - right

38
Q

right glute weakness what are we going to see - compensated

A

pelvic drop right

lateral trunk lean - left

39
Q

what is the AMP good at predicting

A

K levels

not conculsive on fall risks

pt management 3 (10 decks)

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