6. Gait: Initial Swing

throw me in the meat grinder

What phase of the gait cycle is Initial Swing part of?

Single limb support

What rocker occurs during Initial Swing?

No rocker

What phase is the contralateral limb in during Initial Swing?

Early Midstance

What are the critical events during Initial Swing?

Hip flexion to advance the limb
Knee flexion for foot clearance to prevent toe drag

What is the pelvic tilt in the sagittal plane during Initial Swing?

Anterior pelvic tilt 15°

What is the trunk position during Initial Swing (sagittal plane)?

Neutral

What is the hip position and internal moment during Initial Swing (sagittal plane)?

15° flexion
Iliacus & Sartorius contract CONCENTRICALLY

What is the knee position and its role during Initial Swing (sagittal plane)?

60° flexion (max flexion in gait cycle)
Knee flexion provides foot clearance

What is the ankle position during Initial Swing (sagittal plane)?

5° PF

What is the MTP joint motion during Initial Swing (sagittal plane)?

MTPs flexing to neutral

What is the frontal plane motion at the hip during Initial Swing?

Hip abduction causes ipsilateral pelvic drop

What happens to pelvic rotation in the horizontal plane during Initial Swing?

Pelvis backward rotation 3–5° max

What happens to hip rotation during Initial Swing (horizontal plane)?

IR

What happens to knee rotation during Initial Swing (horizontal plane)?

Neutral