Table 5 Knee injury and osteoarthritis outcome score subscale scores for the revision ACLR group and primary ACLR group preoperative and at follow-up
Knee injury and Osteoarthritis Outcome Score | |||||
|---|---|---|---|---|---|
Pain | Symptoms | ADL | Sport and Recreation | Knee-related QoL | |
Preoperative | |||||
1. Revision ACLR group, primary ACLR (n = 70) | 82.3 (13.8) | 77.8 (15.3) | 91.1 (9.9) | 48.8 (29.2) | 36.3 (23.5) |
2. Revision ACLR group, second ACLR (n = 65) | 86.6 (11.6) | 82.1 (14.1) | 94.2 (7.5) | 60.2 (28.8) | 46.2 (27.2) |
Mean with-in difference (95% CI) | |||||
1 compared to 2 | -4.6 (-8.1 to -1.0) | -5.2 (-9.7 to -0.6) | -3.6 (-6.1 to -1.2) | -12.7 (-21.1 to -4.2) | -11.4 (-18.0 to -4.7) |
p-value | 0.012 | 0.027 | 0.004 | 0.004 | 0.001 |
3. Primary ACLR group, (n = 72) | 81.8 (14.6) | 77.8 (18.2) | 90.5 (11.8) | 55.6 (27.1) | 41.0 (22.9) |
Mean group difference (95% CI) | |||||
1 compared to 3 | 0.8 (-3.2 to 4.9) | 2.2 (-3.0 to 7.4) | 0.9 (-2.2 to 4.1) | -6.3 (-14.3 to 1.6) | -5.3 (-13.3 to 2.5) |
p-value | 0.686 | 0.403 | 0.553 | 0.113 | 0.180 |
2 compared to 3 | 5.3 (1.0 to 9.5) | 6.1 (0.2 to 12.0) | 4.0 (0.7 to 7.4) | 5.5 (-4.2 to 15.3) | 4.6 (-4.7 to 13.9) |
p-value | 0.017 | 0.044 | 0.020 | 0.259 | 0.326 |
Follow-up | |||||
4. Revision ACLR group (n = 65) | 85.3 (12.6) | 81.5 (14.1) | 93.8 (7.7) | 67.6 (27.0) | 58.9 (20.8) |
Mean with-in difference (95% CI) | |||||
1 compared to 4 | -2.3 (-6.6 to 2.0) | -2.5 (-7.8 to 2.9) | -1.9 (-4.8 to 1.0) | -17.7 (-27.2 to -8.2) | -20.5 (-28.8 to -12.1) |
p-value | 0.280 | 0.366 | 0.182 | < 0.001 | < 0.001 |
2 compared to 4 | 1.0 (-3.3 to 5.2) | 1.6 (-3.4 to 6.6) | 0.3 (-2.3 to 3.0) | -5.9 (-15.3 to 3.5) | -12.8 (-21.9 to -3.8) |
p-value | 0.643 | 0.526 | 0.799 | 0.212 | 0.006 |
5. Primary ACLR group (n = 72) | 90.6 (11.2) | 84.4 (15.2) | 96.3 (7.4) | 81.1 (18.4) | 72.7 (19.7) |
Mean with-in difference (95% CI) | |||||
3 compared to 5 | -8.5 (-12.9 to -4.1) | -7.9 (-13.1 to -2.6) | -5.5 (-8.6 to -2.4) | -25.6 (-32.8 to -18.4) | -32.2 (-39.9 to -24.5) |
p-value | < 0.001 | 0.004 | < 0.001 | < 0.001 | < 0.001 |
Mean group difference (95% CI) | |||||
4 compared to 5 | -5.9 (-10.0 to -1.8) | -3.2 (-8.1 to 1.8) | -3.3 (-5.5 to -1.2) | -13.7 (-21.0 to -6.3) | -14.8 (-20.1 to -8.6) |
p-value | 0.006 | 0.203 | 0.003 | < 0.001 | < 0.001 |
Change in KOOS score preoperative to follow-up | |||||
Mean group difference (95% CI) | |||||
(a compared to d) – (c compared to e) | -8.1 (-14.2 to -2.1) | -8.0 (-15.8 to -0.3) | -5.5 (-9.2 to -1.9) | -11.9 (-22.9 to -0.9) | -15.6 (-26.3 to -5.0) |
p-value | 0.009 | 0.042 | 0.004 | 0.035 | 0.005 |