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Gait analysis after ankle arthrodesis.

W L Wu1, F C Su, Y M Cheng

  • 1Institute of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan.

Gait & Posture
|February 9, 2000
PubMed
Summary
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Ankle arthrodesis significantly reduces hindfoot motion in the sagittal plane, indicating stiffness. Forefoot and transverse plane movements increase after ankle fusion during walking.

Area of Science:

  • Biomechanics
  • Orthopedic surgery
  • Motion analysis

Background:

  • Ankle arthrodesis is a surgical procedure to fuse the ankle joint.
  • Understanding its impact on foot kinematics is crucial for patient outcomes.

Purpose of the Study:

  • To analyze the 3D kinematic effects of ankle arthrodesis on the rearfoot and forefoot during walking.
  • To quantify changes in foot and ankle motion post-surgery.

Main Methods:

  • Utilized a computerized motion analysis system.
  • Employed a three-segment rigid body model for foot and ankle motion.
  • Compared kinematic data between patients with ankle arthrodesis and healthy controls.

Main Results:

  • Significantly decreased sagittal plane hindfoot motion observed in the operated foot.

Related Experiment Videos

  • Demonstrated generalized hindfoot stiffness in the sagittal plane post-arthrodesis.
  • Showed increased forefoot sagittal plane motion and increased hindfoot/forefoot transverse plane motion.

    • Conclusions:

    • Ankle arthrodesis leads to altered foot kinematics, primarily affecting hindfoot motion.
    • Compensatory increases in forefoot and transverse plane movements occur after ankle fusion.
    • Findings highlight the biomechanical consequences of ankle fusion on gait.