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3D Kinematic Gait Analysis for Preclinical Studies in Rodents
Published on: August 3, 2019
Comparing three attachment systems used to determine knee kinematics during gait
Ingrid Südhoff1, Stéphane Van Driessche, Sébastien Laporte
1Laboratoire de Biomécanique, CNRS UMR 8005 et Ecole Nationale Supérieure d'Arts et Métiers, Paris, France. ingrid.sudhoff@etsmtl.ca
Gait & Posture
|August 1, 2006
Summary
This study evaluated attachment systems (AS) for gait analysis, finding system B most stable for tibia measurements. However, no system fully prevented transverse plane displacement, crucial for accurate biomechanical analysis.
Area of Science:
- Biomechanics
- Gait Analysis
- Medical Device Evaluation
Background:
- Minimizing soft tissue artifacts is critical for accurate gait analysis.
- Attachment systems (AS) are used to secure markers but can introduce errors.
- Understanding AS stability is essential for reliable kinematic data.
Purpose of the Study:
- To compare the displacement of three different attachment systems (AS).
- To assess AS stability across various knee flexion angles and gait cycles.
- To determine the most stable AS for reducing soft tissue artifacts in gait analysis.
Main Methods:
- Utilized EOS low-dose biplanar X-ray system for 3D bone and AS positioning.
- Investigated displacement in frontal, sagittal, and axial planes for 18 subjects.
- Computed relative AS positions in anatomical coordinate systems (CS).
Main Results:
- AS showed stability in frontal (<1.5°) and sagittal planes but instability in the axial plane (>6°).
- Average translations were 4.5mm (femur) and 2.7mm (tibia).
- System B demonstrated significantly less diaphyseal translation for the femur and greater tibial stability (p=0.04).
Conclusions:
- Attachment system B exhibited the highest overall stability, particularly for the tibia.
- No evaluated system effectively limited displacement in the transverse plane.
- Further development is needed for AS to minimize artifacts in all planes during gait analysis.
