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- W2515228045 abstract "Introduction and Aims: Since existing data relating to the kinematics of ACL-deficient knee joints relates mainly to walking, the kinematics during more dynamic activities remains unknown; therefore, the aim of this unique study was to describe in vivo ACL-deficient knee kinematics and muscle activity during running and cutting. Method: Fifteen subjects with proven unilateral ACL rupture were measured performing running and cutting tasks prior to surgical reconstruction. Gait analysis was used to determine inter-limb differences in displacements at the knee joint during stance phase. Simultaneous EMG analysis was performed to give temporal measures of lower limb muscle activity. Results: No significant inter-limb difference was seen for tibio-femoral translation in the sagittal or coronal planes during any part of stance phase. The ACLD limb showed a significantly reduced maximum knee flexion angle (40.4 vs. 44.0 degrees) compared to the ACL-intact (ACLI) limb (p=0.04). Internal tibial rotation was significantly greater (7.3 vs. 0.7 degrees) in the ACLD limb at toe-off (p=0.03). The quadriceps muscle group was found to be active for a significantly greater percentage of stance phase in the ACLD limb compared to the ACLI limb (p=0.001). Conclusion: The ACL-deficient gait involves consistently greater knee extensor activity than ACL-intact gait during running, and as a consequence maximum knee flexion angle is reduced. These findings contrast with the description of ‘quadriceps-avoidance’ gait often described for ACL-deficient subjects. ACL-deficient gait also demonstrates increased rotational instability during terminal stance phase." @default.
- W2515228045 created "2016-09-16" @default.
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- W2515228045 date "2005-09-01" @default.
- W2515228045 modified "2023-09-23" @default.
- W2515228045 title "IN VIVO KINEMATICS OF THE ACL-DEFICIENT KNEE DURING RUNNING AND CUTTING" @default.
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