Key Features of the Gait Phase Flashcards
when is heel rocker initiated during initial contact
when calcaneus contacts support surface
heel is fulcrum about which the foot rotates during LR
what is the critical event of the initial contact phase
heel first contact
what are the key features of the loading response
heel rocker continues
shock absorption
forward propulsion through hip extension
what is the critical event of loading response
hip stability
controlled knee flexion
controlled ankle plantar flexion
when does the 2nd rocker occur
ankle rocker
mid stance when tibia rotates forward about talocrural axis – tibia progresses over talus
what are the key features during mid stance
shock absorption
stabilize in single limb support
forward progression
what is the critical event for mid stance phase
controlled tibial advancement
when does the 3rd rocker occur
forefoot rocker
terminal stance when heel lifts off support surface and mid & hindfoot rotate about the extending MTP joints
what are the key features of the terminal stance
continued stabilization in single limb support
forward propulsion through plantarflexion
what is the critical event of terminal stance
controlled ankle dorsiflexion with heel rise
when does the 4th rocker occur
toe rocker
preswing when limb is rapidly unloaded and weight is transferred to contralateral limb
what are the key features of pre swing
continued forward propulsion through plantarflexion
hallux limitus can affect this
what is the critical event of the pre-swing phase
passive knee flexion to 40 degrees and ankle plantar flexion
what are the key features of the initial swing
forward propulsion of swing leg through hip flexion
foot clearance –> majority of foot clearance attributed to knee flexion
critical event of initial swing
hip flexion to 15 degrees and knee flexion to 60 degrees
what are the key features of the mid swing
forward propulsion of swing leg through hip flexion
foot clearance –> majority of foot clearance attributed to DF to neutral
critical event of mid swing
further hip flexion to 25 degrees
ankle dorsiflexion to 0 degrees
what are the key features of terminal swing
prepare for initial contact –> controlled knee extension and ankle positioned into less supination
critical event of terminal swing
knee extension to neutral – possibly 5 degrees of flexion
in the sagittal plane the hip is what at initial contact..
flexed at initial contact and moves into extension
when does maximum hip extension occur
at the end of terminal stance
how many degrees of hip flexion and extension are needed for normal gait
30 degrees of flexion
10 degrees of extension
in the sagittal plane the knee is what at initial contact..
flexed 5 degrees at initial contact and continues to flex 10-15 degrees
when does the knee approaches near full extension..
until the heel comes off then moves into flexion
end of terminal stance