Gait Analysis Flashcards
Traditional Phases of Gait
Heel strike Foot Flat Midstance Heel off Toe off Acceleration Midswing Deceleration
Ranchos Los Amigos Phases of Gait
Initial Contact Loading Response Mistance Terminal Stance Preswing Initial Swing Midswing Terminal Swing
Initial Contact
Instant heel contacts the ground
Loading Response
From heel contact to foot flat
Continues until contralateral limb lifts off ground
Double support time increases with
Age
Lack of balance
Pathology
Double support time decreases with
Increased velocity
Increased cadence
Midstance
From foot flat position until the body is supported over the WB limb
Begins when contralateral extremity lifts off the ground
Terminal Stance
From midstance through heel off of the WB extremity
From midstance until contact of the contralateral extremity
Preswing
From heel off until toe off of the WB extremity
Initial Swing
From toe off until maximum knee flexion of ipsilateral extremity
Midswing
From maximum knee flexion until tibia is in a vertical position
Terminal Swing
From vertical tibia position until just before initial contact of the ipsilateral extremity
Center of Mass displacement during gait
Anterior to S2
Sagittal and frontal plane displacement during gait
Sagittal plane displacement of COM during gait
5 cm superior-inferior
Max during simultaneous midstance and midswing
Min during double support
Frontal Plane displacement of COM during gait
Max just after midstance as BW is shifted over stance limb
Increased step width allows greater med/lateral displacement of COM
Narrow width=less energy=less safety
