Second ACL injury rate according to mechanism and pattern of the index ACL injury*
| Second ACL injury, n (%) | P value | |
| Injury mechanism | ||
| Non-contact injury (n=67) | 18 (26.9) | 0.001 |
| Indirect or direct contact (n=51) | 2 (3.9) | |
| Injury pattern | ||
| Isolated injury (n=45) | 13 (28.9) | 0.007 |
| Associated injury (n=73) | 7 (9.6) | |
| Combination of injury mechanism and injury pattern | ||
| Isolated non-contact injury (n=26) | 11 (42.3) | <0.001 |
| Associated non-contact injury (n=41) | 7 (17.1) | |
| Isolated indirect or direct contact injury (n=19) | 2 (10.5) | |
| Associated indirect or direct contact injury (n=32) | 0 (0) | |
*Only the first subsequent injury included for the single player with bilateral subsequent injuries.
ACL, anterior cruciate ligament.