TABLE 2.
IKDC Scores for Each Knee Injury Classification, Preinjury Through 12 Months Postinjurya
| Injury | IKDC Score, Mean ± SD | Change From Preinjury | ||
|---|---|---|---|---|
| Mean | 95% CI | P | ||
| ACL (n = 99) | ||||
| Preinjury | 93.45 ± 2.60 | — | — | — |
| Diagnosis | 46.22 ± 18.25 | −47.23 | −51.19, −43.27 | <.001 |
| 3 mo | 55.68 ± 16.09 | −37.73 | −41.78, −33.67 | <.001 |
| 6 mo | 74.28 ± 15.29 | −19.06 | −23.09, −15.03 | <.001 |
| 12 mo | 84.86 ± 13.09 | −8.59 | −12.55, −4.63 | <.001 |
| AKP (n = 63) | ||||
| Preinjury | 90.91 ± 11.22 | — | — | — |
| Diagnosis | 53.04 ± 16.80 | −37.88 | −44.42, −33.33 | <.001 |
| 3 mo | 73.25 ± 16.52 | −17.43 | −22.06, −12.79 | <.001 |
| 6 mo | 79.40 ± 15.53 | −11.46 | −16.03, −6.89 | <.001 |
| 12 mo | 81.43 ± 15.56 | −9.49 | −14.03, −4.94 | <.001 |
| PAT (n = 36) | ||||
| Preinjury | 93.65 ± 8.93 | — | — | — |
| Diagnosis | 45.18 ± 16.71 | −48.47 | −55.00, −41.94 | <.001 |
| 3 mo | 71.30 ± 18.32 | −22.49 | −29.37, −15.60 | <.001 |
| 6 mo | 78.13 ± 16.39 | −15.72 | −22.35, −9.08 | <.001 |
| 12 mo | 80.40 ± 14.21 | −13.25 | −19.78, −6.72 | <.001 |
| MNT (n = 16) | ||||
| Preinjury | 93.46 ± 7.68 | — | — | — |
| Diagnosis | 42.96 ± 14.77 | −50.50 | −60.27, −40.73 | <.001 |
| 3 mo | 72.63 ± 20.75 | −20.83 | −30.60, −11.07 | <.001 |
| 6 mo | 78.74 ± 21.87 | −14.73 | −24.49, −4.96 | .004 |
| 12 mo | 87.28 ± 8.94 | −6.18 | −15.94, 3.59 | .211 |
| ITB (n = 12) | ||||
| Preinjury | 95.31 ± 5.58 | — | — | — |
| Diagnosis | 62.45 ± 5.10 | −32.85 | −41.18, −24.53 | <.001 |
| 3 mo | 71.15 ± 17.24 | −23.78 | −32.57, −14.98 | <.001 |
| 6 mo | 84.71 ± 11.17 | −11.56 | −20.36, −2.76 | .011 |
| 12 mo | 83.24 ± 17.41 | −12.07 | −20.39, −3.74 | .006 |
| COL (n = 11) | ||||
| Preinjury | 93.30 ± 8.29 | — | — | — |
| Diagnosis | 33.91 ± 17.87 | −58.39 | −73.15, −43.63 | <.001 |
| 3 mo | 73.35 ± 14.57 | −18.92 | −33.35, −4.49 | .012 |
| 6 mo | 72.12 ± 25.64 | −13.52 | −28.31, 1.27 | .072 |
| 12 mo | 82.18 ± 20.69 | −10.11 | −24.87, 4.64 | .173 |
| OTH (n = 6) | ||||
| Preinjury | 89.08 ± 22.85 | — | — | — |
| Diagnosis | 42.34 ± 14.73 | −46.74 | −66.92, −26.57 | <.001 |
| 3 mo | 55.17 ± 30.50 | −33.91 | −54.09, −13.73 | .002 |
| 6 mo | 81.03 ± 12.20 | −8.05 | −28.22, 12.13 | .415 |
| 12 mo | 95.98 ± 4.29 | 6.90 | −13.28, 27.07 | .484 |
aACL, anterior cruciate ligament tear; AKP, anterior knee pain; CI, confidence interval; COL, collateral ligament sprain; IKDC, International Knee Documentation Committee; ITB, iliotibial band syndrome; MNT, meniscus tear; OTH, other; PAT, patellar instability; SD, standard deviation.