Table 1.
Kinematic Assessment of the Descendant Phase of the Single-Leg Squat Through Dynamic RSA a
| Rotation, deg | Translation, mm | |||
|---|---|---|---|---|
| Internal-External | Varus-Valgus | Anterior-Posterior | Medial-Lateral | |
| 0°-15° | ||||
| ACL-injured | 7.1 ± 1.6 | –0.4 ± 0.7 b | 4.2 ± 1.1 | 0.2 ± 0.5 b |
| SB | 4.0 ± 1.7 | –0.5 ± 1.0 | 0.2 ± 2.0 | 0.5 ± 1.0 b |
| SBLP | 3.2 ± 2.0 | –1.9 ± 1.0 | 0.7 ± 1.3 c | 0.3 ± 0.7 b |
| Healthy | 2.5 ± 3.0 | –3.0 ± 1.2 | 4.4 ± 2.2 | –1.9 ± 0.9 |
| 15°-30° | ||||
| ACL-injured | 6.5 ± 1.4 b | –1.9 ± 0.8 | 10.1 ± 1.1 | 0.5 ± 0.5 b |
| SB | 3.8 ± 1.7 | –1.8 ± 1.1 | 7.6 ± 2.3 | 0.0 ± 0.8 b |
| SBLP | 3.7 ± 2.3 | –3.0 ± 1.2 | 6.5 ± 1.6 c | –0.2 ± 0.7 b |
| Healthy | 1.9 ± 3.0 | –3.6 ± 1.5 | 9.6 ± 2.4 | –1.7 ± 0.7 |
| 30°-45° | ||||
| ACL-injured | 6.3 ± 1.4 b | –3.3 ± 1.0 | 15.6 ± 0.9 | 0.8 ± 0.5 b |
| SB | 2.9 ± 1.7 | –2.9 ± 1.3 | 14.5 ± 1.5 | 0.4 ± 0.5 |
| SBLP | 3.4 ± 2.3 | –3.5 ± 1.4 | 13.5 ± 1.7 | –0.1 ± 0.8 |
| Healthy | 0.8 ± 2.8 | –5.0 ± 1.9 | 15.5 ± 2.5 | –1.2 ± 0.6 |
| 45°-60° | ||||
| ACL-injured | 6.1 ± 1.4 b | –4.2 ± 1.2 | 20.1 ± 0.9 | 1.3 ± 0.5 b |
| SB | 3.4 ± 1.8 | –3.5 ± 1.6 | 19.1 ± 1.3 | 0.4 ± 0.5 |
| SBLP | 4.5 ± 2.0 | –3.6 ± 1.5 | 20.0 ± 1.4 | 0.6 ± 0.8 b |
| Healthy | –0.3 ± 2.4 | –6.0 ± 1.6 | 20.5 ± 2.4 | –1.4 ± 0.6 |
a All values are reported as mean ± SE. ACL, anterior cruciate ligament; RSA, roentgen stereophotogrammetric analysis; SB, single-bundle; SBLP, single-bundle plus lateral plasty.
b Statistically significant difference compared with the healthy group (P < .05).
c Statistically significant difference compared with the ACL-injured group (P < .05).