TABLE 3.
Mean (±SD) Value for the Input Force and Moments and the Primary and Secondary Outcome Measurements by Test Block (N = 15 specimens)a
| BASE1 | Internal Tibial Torque + Varus Moment | Internal Tibial Torque + Valgus Moment | External Tibial Torque + Varus Moment | External Tibial Torque + Valgus Moment | BASE2 | |
|---|---|---|---|---|---|---|
| Input force | ||||||
| Impulsive compressive force, N | 1457 ± 131 | 871 ± 89 | 844 ± 88 | 1113 ± 114 | 1121 ± 121 | 1429 ± 136 |
| Input moments | ||||||
| Axial tibial torque,b N·m | 27.0 ± 4.5 | 26.0 ± 3.4 | −25.5 ± 6.0 | −24.5 ± 6.3 | ||
| Frontal plane moment,c N·m | −44.2 ± 4.5 | 42.8 ± 4.5 | −56.5 ± 5.8 | 60.0 ± 6.2 | ||
| Primary outcome | ||||||
| AM-ACL relative strain, % | 3.8 ± 2.8 | 7.0 ± 3.9 | 7.0 ± 4.1 | 2.4 ± 2.5 | 2.4 ± 3.2 | 3.4 ± 2.7 |
| Secondary outcomes | ||||||
| Quadriceps force, N | 772 ± 133 | 806 ± 135 | 918 ± 159 | 835 ± 190 | 726 ± 150 | 753 ± 133 |
| Knee flexion angle, deg | 4.4 ± 1.1 | 5.2 ± 1.0 | 6.1 ± 1.0 | 2.6 ± 1.1 | 1.9 ± 1.0 | 4.1 ± 1.0 |
| Anterior tibial translation, mm | 1.6 ± 0.7 | 4.4 ± 1.6 | 4.5 ± 1.7 | 1.0 ± 0.9 | 1.0 ± 0.9 | 1.6 ± 0.6 |
| Axial tibial rotation,b deg | 2.7 ± 1.1 | 13.5 ± 2.6 | 13.3 ± 2.2 | −15.3 ± 3.6 | −15.0 ± 4.2 | 2.4 ± 0.8 |
| Frontal plane angle,b deg | 0.9 ± 0.5 | 2.2 ± 1.3 | 2.6 ± 1.5 | −3.1 ± 1.6 | −3.0 ± 1.5 | 0.8 ± 0.5 |
a
ACL, anterior cruciate ligament; AM, anteromedial bundle; BASE1 and BASE2, 2 baseline trial blocks.
b
Positive value represents internal tibial torque or rotation.
c
Positive value represents knee valgus moment or angle.