👣

Understanding JAKC Gait Analysis Framework

Apr 22, 2025

Lecture on JAKC Observational Gait Analysis Form

Introduction

  • Presenters: Will and Tracy
  • Focus on the JAKC Observational Gait Analysis Form from "Observational Gait Analysis: A Visual Guide."
  • JAKC stands for the author's initials.
  • Known for its color-coded functionality.
    • Blue: Weight Acceptance
    • Yellow: Single Limb Support
    • Red: Swing Phase Advancement

Three Tasks of Gait

  • Based on Jacquelin Perry's Gait Analysis
  • Functional parts of gait that are often patient complaints
  • Simple checkbox format with clinical utility

Phases of Gait

  • Eight Phases Defined by Rancho Los Amigos
    • Initial Contact
    • Loading Response
    • Mid Stance
    • Terminal Stance
    • Pre Swing
    • Initial Swing
    • Mid Swing
    • Terminal Swing
  • Note: Pre swing is part of swing phase advancement

Ankle Observations

  • Initial Contact
    • Forefoot contact
    • Flat foot contact
    • Abbreviated heel contact with inadequate dorsiflexion
  • Loading Response
    • Foot slap (audible and visible)
    • Inadequate dorsiflexion
  • Single Limb Support
    • Excessive dorsiflexion
  • Swing Phase Advancement
    • Contralateral vault (compensatory mechanism for inadequate dorsiflexion)

Calcaneus and Toes

  • Excess inversion and eversion, mainly in single limb support
  • Inadequate metatarsal-phalangeal extension (MTP X)

Knee Observations

  • Inadequate Extension and Flexion
  • Single Limb Support
    • Hyperextension vs. Extensor Thrust
    • Wobble: instability in flexion/extension
    • Varus/Valgus thrust
  • Swing Phase
    • Inadequate flexion/extension
    • Excess contralateral flexion

Thigh and Hip

  • Importance of observing thigh for hip joint issues
    • Medial and lateral rotation in the stance phase
  • Abduction, adduction, and circumduction

Pelvis Observations

  • Key for gait efficiency
  • Single Limb Support
    • Excess anterior tilt
    • Inadequate or excessive backward rotation
  • Swing Limb Advancement
    • Trendelenburg patterns, inadequate forward rotation

Trunk Observations

  • Forward lean, backward lean, left or right lean

Practice and Application

  • Emphasize practice and repeated use of the form
  • Practice with case studies and video analysis
    • Utilize slow motion for detailed observations
    • Encouragement to video patients for thorough analysis

Next Steps

  • Upcoming video on case study analysis
  • Tips for effective use: do not mark what you don't observe and leverage video reviews.