An anterior cruciate ligament (ACL) tear is a common injury, particularly among young, active individuals, that occurs during pivoting movements or changes in direction. This injury causes knee instability and alters the knee’s biomechanics during functional activities.
The objective of this study is to identify kinematic profiles of the knee during walking, measured using the KneeKG system (Emovi, Montreal, QC, Canada), and to explore their relationships with anatomical, clinical, and functional factors that may be associated with knee instability and its potential persistence following surgical reconstruction. Using data collected at Sainte-Justine University Hospital Center from patients with an ACL tear prior to surgical reconstruction, clustering analyses and Statistical Parametric Mapping for 1-Dimensional were performed to better understand the mechanisms involved in instability.
The results highlight two distinct patterns of anteroposterior knee translation following ACL rupture. These patterns are independent of posterior tibial slope (PTS), pivot shift grade, and isokinetic muscle parameters. The differences are primarily evident during the swing phase, suggesting a role for neuromuscular control rather than morphological factors or muscle strength.
This study demonstrates the complexity of knee stability following ACL rupture and highlights significant variability among patients. This suggest that neuromuscular control may play an important role in regulating tibial translation. Finally, although PTS is known to influence tibial translation under static conditions, its impact appears to be much more limited under dynamic conditions.
| Date | 23 Jul 2026 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Nicola Hagemeister (Supervisor) & Marie Lyne Nault (Co-supervisor) |
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Bayol, A. (Author),
Hagemeister (Supervisor) & Nault (Co-supervisor),
23 Jul 2026Student thesis: Master's thesis › Master in Engineering: Engineering