Table 2.
Knee Kinematic and Kinetic Outcomes During Walking in the Healthy and Meniscectomy Groups a
| Knee Joint Movement | Healthy Group | Meniscectomy Group | Mean Difference (95% CI) b | |||
|---|---|---|---|---|---|---|
| Affected Leg | Contralateral Leg | Affected Leg vs Healthy Group | Affected Leg vs Contralateral Leg | Healthy Group vs Contralateral Leg | ||
| Knee joint kinematics, deg | ||||||
| KFA at initial contact | −2.8 ± 3.4 | −0.4 ± 4.7 | −2.8 ± 5.1 | 2.5 (−0.4 to 5.36) | 2.5 (0.7 to 4.2) | 0.0 (−2.9 to 2.9) |
| KFA at early TKJM | 13.9 ± 4.3 | 14.8 ± 7.0 | 14.6 ± 7.4 | 0.9 (−3.2 to 5.1) | 0.2 (−2.3 to 2.8) | −0.7 (−4.8 to 3.4) |
| KAA at early TKJM | 1.0 ± 3.3 | −0.6 ± 4.4 | −0.5 ± 3.7 | −1.6 (−4.0 to 0.8) | −0.1 (−1.9 to 1.7) | 1.5 (−1.0 to 3.9) |
| KRA at early TKJM | −7.7 ± 9.7 | −16.0 ± 9.8 | −11.8 ± 9.2 | −8.3 (−14.5 to −2.2) | −4.3 (−9.0 to 0.5) | 4.1 (−2.1 to 10.2) |
| KFA at late TKJM | 0.5 ± 3.4 | 5.3 ± 6.1 | 2.4 ± 6.4 | 4.8 (1.3 to 8.3) | 2.9 (0.6 to 5.2) | −1.9 (−5.4 to 1.6) |
| KAA at late TKJM | −0.1 ± 3.4 | −2.1 ± 4.3 | −2.0 ± 3.1 | −2.0 (−4.5 to 0.4) | −0.2 (−1.6 to 1.3) | 1.9 (−0.5 to 4.3) |
| KRA at late TKJM | −12.3 ± 8.8 | −14.3 ± 9.8 | −12.0 ± 10.7 | −2.0 (−8.2 to 4.2) | −2.2 (−7.2 to 2.7) | −0.3 (−6.4 to 5.9) |
| Knee joint kinetics, % c | ||||||
| Peak early stance TKJM | 4.3 ± 1.2 | 3.5 ± 1.0 | 3.9 ± 1.0 | −0.8 (−1.5 to −0.1) | −0.4 (−0.8 to 0.0) | 0.4 (−0.3 to 1.1) |
| KFM at early TKJM | 2.9 ± 1.7 | 2.1 ± 1.7 | 2.5 ± 1.5 | −0.8 (−1.9 to 0.3) | −0.4 (−1.1 to 0.3) | 0.4 (−0.6 to 1.5) |
| KAM at early TKJM | 2.5 ± 0.8 | 2.1 ± 1.1 | 2.2 ± 0.9 | −0.4 (−1.0 to 0.2) | −0.1 (−0.7 to 0.4) | 0.3 (−0.3 to 0.9) |
| KERM at early TKJM | 0.6 ± 0.3 | 0.4 ± 0.7 | 0.6 ± 0.5 | −0.2 (−0.5 to 0.1) | −0.2 (−0.4 to 0.1) | 0.0 (−0.3 to 0.3) |
| Peak late stance TKJM | 4.0 ± 1.0 | 3.0 ± 0.8 | 3.4 ± 0.7 | −1.0 (−1.6 to −0.4) | −0.5 (−0.8 to −0.1) | 0.5 (−0.1 to 1.1) |
| KEM at late TKJM | −3.0 ± 1.1 | −2.1 ± 0.9 | −2.4 ± 1.1 | 0.9 (0.2 to 1.6) | 0.4 (−0.1 to 0.8) | −0.6 (−1.2 to 0.1) |
| KAM at late TKJM | 2.1 ± 1.0 | 1.5 ± 1.0 | 1.6 ± 1.1 | −0.5 (−1.2 to 0.2) | 0.0 (−0.5 to 0.4) | 0.5 (−0.2 to 1.2) |
| KIRM at late TKJM | −1.2 ± 0.4 | −0.6 ± 0.6 | −0.8 ± 0.6 | 0.6 (0.3 to 0.9) | 0.2 (−0.1 to 0.6) | −0.4 (−0.7 to −0.1) |
| Knee adduction angular impulse | 0.9 ± 0.3 | 0.7 ± 0.3 | 0.8 ± 0.3 | −0.2 (−0.4 to 0.1) | 0.0 (−0.2 to 0.1) | 0.1 (−0.1 to 0.3) |
a
Data are reported as mean ± SD unless otherwise indicated. Boldface values indicate statistically significant difference between groups compared (P < .05). KAA, knee adduction angle; KAM, knee adduction moment; KEM, knee extension moment; KERM, knee external rotation moment; KFA, knee flexion angle; KFM, knee flexion moment, KIRM, knee internal rotation moment; KRA, knee rotation angle; TKJM, total knee joint moment.
b
CI, Confidence Interval
c
All kinetic data were normalized to body weight × height and are reported as percentages.