Table 1.
Baseline demographics
| Total (n = 30,591) | Males (n = 17,446) | Females (n = 13,145) | |
|---|---|---|---|
| Age at index ACL injury | 24.4 (9.2) | 25.2 (8.5) | 23.2 (9.9) |
| Age at index ACLR | 26.5 (9.7) | 27.5 (9.0) | 25.1 (10.4) |
| Adolescents | 9430 (30.8%) | 3755 (21.5%) | 5675 (43.2%) |
| Height | 174.7 (9.1) | 180.5 (6.6) | 167.6 (6.1) |
| Weight | 75.6 (14.2) | 82.5 (12.1) | 67.1 (11.8) |
| Body mass index | 24.7 (3.6) | 25.3 (3.3) | 23.9 (3.9) |
| Smokers | 1732 (11.7%) | 1003 (12.3%) | 729 (11.0%) |
| Smokeless tobacco users | 1820 (15.0%) | 1530 (22.9%) | 290 (5.3%) |
| HT autograft | 26,537 (86.7%) | 15,039 (86.2%) | 11,498 (87.5%) |
| Surgery duration | 74.5 (24.2) | 75.1 (24.3) | 73.6 (24.0) |
| Injury-to-surgery (months) | 17.2 (31.0) | 17.3 (30.4) | 17.1 (31.9) |
| Meniscal injury | 10,958 (42.4%) | 6755 (44.8%) | 4203 (39.1%) |
| Cartilage injury | 7033 (27.2%) | 4441 (29.5%) | 2592 (24.1%) |
| Activity | |||
| Soccer/football | 13,673 (44.9%) | 9172 (52.8%) | 4501 (34.4%) |
| Floorball | 1916 (6.3%) | 1203 (6.9%) | 713 (5.5%) |
| Handball | 2718 (8.95%) | 598 (3.4%) | 2120 (16.2%) |
| Alpine skiing | 2435 (8.0%) | 1036 (6.0%) | 1399 (10.7%) |
For categorical variables n (%) is presented, while, for continuous variables, the mean (SD) is presented
ACL anterior cruciate ligament, ACLR anterior cruciate ligament reconstruction, HT hamstring tendon, adolescents, 13–19 years of age