Phases of Gait

Question 1

initial contact

Answer 1

critical event: heel contact with ground
ankle: 0 degrees, heel rocker
knee: 0-5
hip: flexion 20, generate torque

Question 2

loading response

hip knee ankle + goal

Answer 2

critical event: hip/knee stability, ankle PF
ankle: PF 5, heel rocker initiate
knee: 15 flexion, absorb shock
hip: flexion 20, 2nd highest torque

Question 3

midstance
hip knee ankle and goal

Answer 3

critical event: controlled tibial advancement
ankle: DF 5
knee: move to extension, tibia advancement after midstance
hip: extend to neutral, stabilize pelvis

Question 4

terminal stance

hip knee ankle + goal

Answer 4

critical event: controlled DF w heel rise to generate propulsion force
ankle: DF 10, 1st metatarsal extension 30, forefoot rocker
knee: calf muscle prevent limb collapse
hip: extension 20
trailing limb

Question 5

preswing

hip knee ankle + goal

Answer 5

critical event: passive knee flexion 40, ankle PF, prepare limb for advancement
ankle: 15 PF, metatarsals flexion 60
knee: flexion 40, clear foot
hip: 10 extension, move towards flexion

Question 6

initial swing

hip knee ankle + goal

Answer 6

critical event: hip flex 15, knee flex 60 to clear foot
ankle: PF 5
knee: flex towards 60
hip: flex 15

Question 7

mid swing

hip knee ankle + goal

Answer 7

critical event: hip flex 25, DF 0
ankle: neutral
knee: rapidly extend 60–>25
hip: flex to 25

Question 8

terminal swing

Answer 8

critical event: knee extends to neutral, position heel for initial contact
ankle: neutral
knee: extend to neutral, active quads for increased step length
hip: reduce flexion to 20