TABLE 5.
Objective Knee ROM, Single-Leg Hop, and Isokinetic Strength Outcomesa
| Variable | 1 y | 2 y | P (Operated: 1 vs 2 y) | P (1 y: Operated vs Nonoperated) | P (2 y: Operated vs Nonoperated) | ||
|---|---|---|---|---|---|---|---|
| Operated Limb | Nonoperated Limb | Operated Limb | Nonoperated Limb | ||||
| Active knee flexion ROM, deg | 136.0 ± 7.4 (121 to 155) |
141.2 ± 6.4 (130 to 157) |
139.4 ± 7.2 (128 to 156) |
142.6 ± 6.4 (130 to 157) |
.023 | <.0001 | .088 |
| Active knee extension ROM, deg | –0.3 ± 2.6 (–5 to 9) |
–2.4 ± 3.4 (–10 to 6) |
–0.6 ± 2.4 (–10 to 6) |
–1.4 ± 2.5 (–10 to 5) |
.526 | .001 | .109 |
| Single hop for distance, m | 1.65 ± 0.42 (0.78 to 2.56) |
1.78 ± 0.31 (1.13 to 2.35) |
1.72 ± 0.39 (0.87 to 2.56) |
1.79 ± 0.31 (1.07 to 2.35) |
.360 | .089 | .334 |
| 6-m timed hop, s | 2.45 ± 0.84 (1.50 to 5.57) |
2.17 ± 0.46 (1.43 to 3.56) |
2.29 ± 0.97 (1.47 to 7.66) |
2.11 ± 0.47 (1.43 to 3.44) |
.385 | .039 | .248 |
| Triple hop for distance, m | 4.65 ± 1.26 (1.90 to 7.19) |
5.07 ± 1.01 (2.81 to 6.98) |
4.97 ± 1.21 (2.01 to 7.19) |
5.16 ± 1.02 (2.82 to 6.98) |
.201 | .073 | .399 |
| Triple crossover hop for distance, m | 4.20 ± 1.29 (1.59 to 6.68) |
4.57 ± 1.11 (2.42 to 6.65) |
4.56 ± 1.25 (1.42 to 6.68) |
4.68 ± 1.09 (2.25 to 6.40) |
.150 | .123 | .620 |
| Knee extension peak torque, N·m | 168.8 ± 74.8 (44.0 to 388.0) |
196.1 ± 72.6 (94.0 to 410.0) |
185.6 ± 74.9 (80.0 to 418.0) |
200.3 ± 75.6 (84.0 to 432.0) |
.264 | .067 | .332 |
| Knee flexion peak torque, N·m | 103.0 ± 37.7 (48.0 to 234.0) |
111.3 ± 34.8 (60.0 to 216.0) |
110.7 ± 36.0 (50.0 to 240.0) |
115.2 ± 35.7 (58.0 to 222.0) |
.349 | .303 | .537 |
aData are shown as mean ± SD (range). Bolded P values indicate statistical significance (P < .05). ROM, range of motion.