Biomechanics 2 - TF

Question 1

whatre we concerned about –> M/L alignment

Answer 1

stabilizing RL in the socket

stabilizing hip joint/pelvis in frontal plane

Question 2

M/L stability

Answer 2

single leg stance

Question 3

gait

Answer 3

midstance

stabalization

Question 4

stabilization –> gait

Answer 4

socket/RL interface

muscle stabilization

pelvis falls to unsupported side

Question 5

socket/RL interface –> stabilization

Answer 5

prevent movement b/w them

Question 6

pelvis falls to unsupported side –> stabilization

Answer 6

eccentric ABDs

Question 7

M/L normal BoS

Answer 7

2-4”

Question 8

support point –> ML

Answer 8

weight bearing point

ischial containment

G max/ischial tub

Question 9

support line –> ML

Answer 9

weight line

from support point to ground

inset/neutral/outset

Question 10

inset foot –> ML

Answer 10

normal ML alignment

normal BoS

Question 11

what should we look at –> ML alignment

Answer 11

pressures in socket

stabilization of ABD (pelvis)

Question 12

socket pressures –> inset

Answer 12

proximal medial

distal lateral (cut end of femur)

Question 13

socket pressures –> outlet

Answer 13

distal medial (ADDs)

proximal lateral (greater trochanter, pressure sensitive)

Question 14

ABD stabilization –> MS

Answer 14

lateral socket stabilizes ABDs

prevents pelvis from dropping on unsupported side

Question 15

ischial containment socket –> socket design

Answer 15

pressure system/pelvic lock

3 point pressure system

Question 16

what does the ischial containment socket prevent

Answer 16

shifting of tibial tuberosity

Question 17

what does the ischial containment socket stabilize

Answer 17

the pelvis

Question 18

ischial containment socket has

Answer 18

narrow M/L

curve of lateral femur

pelvic lock

Question 19

pelvic lock –> ischial containment socket

Answer 19

ischial tuberosity locked

minimizes movement

minimize socket pressure

Question 20

minimize socket pressure –> ischial containment

Answer 20

minimize distal lateral pressure

Question 21

foot alignment –> ML

Answer 21

b/c femur is well stabilized

Question 22

what is the femur well stabilized w/ –> foot alignment

Answer 22

start at inset

move out laterally if there is lateral pain

Question 23

ABD stabilization has

Answer 23

narrow ML

curve of lateral socket along the shape of femur

pelvic lock

stabilizes ABDs

Question 24

socket position –> ABD stabilization

Answer 24

neutral

not adducted

Question 25

subischial socket has no

Answer 25

lock of ischial tuberosity ischial tuberosity slides w/ muscle contraction

Question 26

subischial socket provides

Answer 26

poor stabilization of the ABDs

Question 27

w/ a subischial socket

Answer 27

get gait deviation lateral trunk bend

Question 28

ABD stabilization result --> socket position

Answer 28

in ADD puts ABDs on stretch

Question 29

ischial containment --> foot position

Answer 29

start at inset

Question 30

ischial containment --> socket position

Answer 30

neutral b/w ABD and ADD

Question 31

subischial --> socket position

Answer 31

socket position

Question 32

AP stabilization

Answer 32

socket position knee/TKA line

Question 33

what muscle is most important at HS --> AP stabilization --> ischial containment socket

Answer 33

G max

Question 34

what does the socket wall do--> AP stabilization --> ischial containment socket

Answer 34

stabilizes distal attachment lock on the pelvis good G max stabilization

Question 35

socket position --> AP stabilization --> ischial containment socket

Answer 35

neutral

Question 36

subischial socket --> AP

Answer 36

poor stabilization of the G max put G max on stretch AP socket position is flexed

Question 37

knee alignment/TKA line is

Answer 37

independent of socket type

Question 38

TKA line

Answer 38

trochanter/knee/ankle

Question 39

for AP alignment we look at

Answer 39

knee in relation to TKA line

Question 40

alignment terms

Answer 40

involuntary alignment voluntary alignment neutral alignment

Question 41

involuntary alignment

Answer 41

pt doesnt work to knee stable aligned for stability

Question 42

voluntary alignment

Answer 42

pt has to work to keep knee stable aligned for mobility

Question 43

neutral alignment

Answer 43

balanced b/w involuntary and voluntary balanced b/w stability and mobility

Question 44

knee position

Answer 44

in relation to TKA line

Question 45

anterior to TKA --> knee position

Answer 45

flexion moment

Question 46

posterior to TKA --> knee position

Answer 46

extension moment

Question 47

in line w/ TKA --> knee position

Answer 47

balance b/w

Question 48

involuntary alignment --> knee and TKA

Answer 48

knee posterior to TKA

Question 49

flexing the knee --> involuntary

Answer 49

harder to do

Question 50

involuntary alignment is

Answer 50

more stable less mobile

Question 51

how is involuntary alignment controlled

Answer 51

by alignment

Question 52

voluntary alignment --> knee/TKA

Answer 52

knee is anterior to TKA

Question 53

flexing the knee --> voluntary

Answer 53

easier

Question 54

voluntary alignment is

Answer 54

less stable more mobile

Question 55

voluntary alignment --> control

Answer 55

pt controlled

Question 56

neutral --> TKA/knee

Answer 56

knee in line w/ TKA

Question 57

neutral alignment is

Answer 57

balanced

Question 58

there is a balance b/w --> neutral

Answer 58

mobility and stability

Question 59

neutral control

Answer 59

some alignment control some pt control

Question 60

what should we always consider

Answer 60

alignment fxnal level of pt

Question 61

characteristics of the components

Answer 61

any control from component friction, computerized, hydraulic

Question 62

more aggressive alignment

Answer 62

voluntary

Question 63

less aggressive alignment

Answer 63

involuntary

Question 64

AP alignment --> ischial containment --> socket position

Answer 64

neutral

Question 65

AP alignment --> ischial containment --> knee/TKA position

Answer 65

pt and component dependent

Question 66

AP alignment --> subischial containment --> socket position

Answer 66

flexed

Question 67

AP alignment --> subischial containment --> knee/TKA position

Answer 67

pt and component dependent