Table 4.
Midfielder Metrics Compared With 1 Year Before Index Yeara
| Player Metricsb | Control | Complete ACL Tear | P Value |
|---|---|---|---|
| Games played per season | |||
| Index year | 2.12 ± 9.25 | 1.20 ± 12.73 | <.001 |
| 1 y after injury | −1.56 ± 9.43 | −2.33 ± 17.78 | <.001 |
| 2 y after injury | −3.36 ± 12.44 | −1.29 ± 18.94 | <.001 |
| 3 y after injury | −5.90 ± 13.87 | 11.20 ± 14.87 | .692 |
| 4 y after injury | −3.88 ± 22.22 | 5.25 ± 17.17 | <.001 |
| Minutes played per season | |||
| Index year | 147.88 ± 771.95 | 403.50 ± 862.73 | <.05 |
| 1 y after injury | −128.06 ± 815.46 | −35.78 ± 1284.67 | <.05 |
| 2 y after injury | −337.93 ± 1081.35 | −9.00 ± 1197.96 | <.05 |
| 3 y after injury | −359.60 ± 1357.55 | 804.00 ± 1303.12 | .114 |
| 4 y after injury | −220.62 ± 1935.48 | 402.00 ± 1393.73 | <.05 |
| Minutes played per game | |||
| Index year | 10.31 ± 29.45 | 12.86 ± 14.44 | .976 |
| 1 y after injury | 7.88 ± 28.36 | 4.69 ± 22.33 | <.05 |
| 2 y after injury | 4.99 ± 23.48 | −4.47 ± 26.90 | <.05 |
| 3 y after injury | 8.33 ± 25.07 | 3.31 ± 18.82 | .099 |
| 4 y after injury | 9.41 ± 51.93 | 1.37 ± 26.09 | .753 |
| Goals per season | |||
| Index year | 0.39 ± 2.33 | 1.20 ± 1.75 | <.001 |
| 1 y after injury | −0.22 ± 2.76 | 0.44 ± 1.94 | <.001 |
| 2 y after injury | 0.86 ± 3.21 | −0.71 ± 1.11 | <.001 |
| 3 y after injury | −0.40 ± 3.95 | 2.00 ± 4.18 | .089 |
| 4 y after injury | −1.25 ± 3.77 | 1.00 ± 2.58 | <.001 |
| Assists per season | |||
| Index year | −0.06 ± 2.16 | 0.40 ± 1.26 | <.001 |
| 1 y after injury | −0.33 ± 2.43 | −1.00 ± 1.12 | <.001 |
| 2 y after injury | −1.57 ± 2.21 | −0.14 ± 2.48 | <.001 |
| 3 y after injury | −1.30 ± 2.21 | 0.20 ± 2.95 | <.05 |
| 4 y after injury | −0.38 ± 3.07 | 0.25 ± 2.22 | .156 |
| Points per game | |||
| Index year | 0.03 ± 1.02 | −0.47 ± 1.13 | <.05 |
| 1 y after injury | 0.14 ± 0.82 | 0.21 ± 0.71 | <.05 |
| 2 y after injury | 0.38 ± 0.93 | −0.18 ± 1.04 | <.001 |
| 3 y after injury | 0.22 ± 0.58 | 0.17 ± 0.66 | .236 |
| 4 y after injury | 0.05 ± 0.86 | −0.10 ± 1.19 | <.05 |
aData are reported as mean ± SD. Bolding indicates a statistically significant difference between groups. ACL, anterior cruciate ligament.
bChange in player performance metric as compared with 1 year before index year (ie, time of injury for players with a complete ACL tear and index year for matched controls).