What are the two phases in the gait cycle?
- Swing Phase (40%)
2. Stance Phase (60%)
What are the 7 periods in the gait cycle?
- Loading Response
- Mid-Stance
- Terminal Stance
- Pre-swing
- Initial Swing
- Mid Swing
- Terminal Swing
What are the 7 events in the gait cycle?
- Initial Contact
- Opposite Toe Off
- Heal Rise
- Opposite Initial Contact
- Toe off
- Feet Adjacent
- Tibia Vertical
What does Loading Response (period) begin and end with?
IC–> Opposite Toe Off
What occurs during Loading Response?
- Foot lowers to the ground
- Weight is rapidly transferred onto the outstretched limb
- 1st period of “double-limb support”
What does Mid Stance (period) begin and end with?
Opposite Toe off –> heel rise
What occurs during Mid Stance?
- Foot stays flat
- Opposite leg swings through
- The body progresses over a single, stable limb
- Single limb support
What does Terminal Stance (period) begin and end with?
Heel rise–> Opposite IC
What occurs during Terminal Stance?
- Heel of the stance limb lifts from surface
- Body advances ahead of stance limb and weigh is transferred to the forefoot
- Final portion of single leg stance
What does Pre-Swing (period) begin and end with?
Opposite IC–> Toe Off
What occurs during Pre-Swing?
- “Push-off” phase
- Rapid unloading of the stance leg as weight is transferred to contralateral limb
- 2nd DLS phase
What does Initial Swing (period) begin and end with?
Toe off–> Feet Adjacent
What occurs during Initial Swing?
- Thigh begins to advance as foot comes up off the floor
- Swinging limb passes the stance phase leg and the two feet are side by side
What does Mid -Swing (period) begin and end with?
Feet Adjacent–> Tibia Vertical
What occurs during Mid Swing?
- Thigh continues to advance as knee begins to extend
- Foot clears the ground
What does Terminal Swing (period) begin and end with?
Tibia Vertical–> Initial Contact
What occurs during Terminal Swing?
- Knee extends
- Limb prepares to contact the ground for IC
What are the 3 functional tasks that occur during the gait cycle?
- Weight Acceptance
- Single Limb Support
- Swing Limb Advancement
Which functional tasks occur during the stance phase?
- Weight Acceptance
2. Single Limb Support
Which functional tasks occur during the swing phase?
Limb Advancement
What are the critical events that occur during weight acceptance?
- Weight rapidly loaded onto outstretched limb
- Hip stability
- Controlled knee flexion for shock absorption
- Controlled ankle PF
- Both feet are in contact with the floor
What critical events occur during single limb support?
- Body progresses over a single-stable limb
- Weight transfers over metatarsal heads and heel comes off the ground
- Controlled ankle DF with heel rise
- Trailing Limb posture
What occurs during single limb support?
- Limb is unloaded and comes off the ground
- Limb moves from behind to in front of body
What happens at the knee and ankle during Pre-Swing?
- Passive knee extension to 40 degrees
- Rapid ankle PF
