Gait 3

Question 1

midstance: ankle GRF

Answer 1

anterior

Question 2

What does GRF anterior to the ankle at mid stance allow?

Answer 2

DF

Question 3

midstance: knee GRF

Answer 3

centered

Question 4

midstance: hip GRF

Answer 4

centered

Question 5

midstance: ankle movement

Answer 5

slight PF (3˚) to slight DF (5˚)

Question 6

midstance: knee movement

Answer 6

neutral (0-5˚ flexion)

Question 7

midstance: hip movement

Answer 7

slight flexion

Question 8

midstance: ankle muscles and actions

Answer 8

• gastroc

- eccentric

Question 9

midstance: knee muscles and actions

Answer 9

• quads

- concentric

Question 10

midstance: hip muscles and actions

Answer 10

• hip ABD

- isometric

Question 11

What does eccentric contraction of gastrocs do at mid stance?

Answer 11

prevents excessive tibial translation

Question 12

function of quad concentric contraction at knee

Answer 12

stabilizes the knee

Question 13

midstance: ABD contraction function

Answer 13

prevents Trendelenburg gait pattern

Question 14

terminal stance =

Answer 14

heel off

Question 15

terminal stance: ankle GRF

Answer 15

anterior to ankle

Question 16

terminal stance: knee GRF

Answer 16

anterior to knee

Question 17

terminal stance: hip GRF

Answer 17

posterior to hip

Question 18

terminal stance: ankle movement

Answer 18

DF (5-10˚)

Question 19

terminal stance: knee movement

Answer 19

neutral

Question 20

terminal stance: hip movement

Answer 20

extension

Question 21

terminal stance: ankle muscles and actions

Answer 21

• gastroc

- eccentric

Question 22

terminal stance: knee muscles and actions

Answer 22

• kinda just hanging out

- momentum

Question 23

terminal stance: hip muscles and actions

Answer 23

• kinda just hanging out

- momentum

Question 24

preswing =

Answer 24

toe off

Question 25

preswing: ankle GRF

Answer 25

anterior, but then gone

Question 26

preswing: knee GRF

Answer 26

none

Question 27

preswing: hip GRF

Answer 27

none

Question 28

preswing: ankle movement

Answer 28

PF (5-10˚)

Question 29

preswing: knee movement

Answer 29

flexion (~60˚)

Question 30

preswing: hip movement

Answer 30

flexion (~20˚)

Question 31

preswing: ankle muscles and action

Answer 31

- TA | - concentric

Question 32

preswing: knee muscles and action

Answer 32

- hamstrings | - concentric

Question 33

preswing: hip muscles and action

Answer 33

- hip flexors | - concentric

Question 34

If the TA isn't working properly at preswing, what would this look like?

Answer 34

toe drag

Question 35

Why do the muscles act concentrically at preswing?

Answer 35

- needed for limb advancement | - once we're past GRFs and have gravity acting on limb