Table 1. Baseline characteristics of ACL-injured patients with and without reconstruction.
| Variable | ACL-injured patients | p | |
|---|---|---|---|
| With reconstruction n = 1374 (15.7%) |
Without reconstruction n = 7395 (84.3%) |
||
| Sex, n (%) | <0.001 | ||
| Male | 982 (71.5) | 3987 (53.9) | |
| Female | 392 (28.5) | 3408 (46.1) | |
| Age at ACL injury, mean (SD) | 30.46 (11.30) | 40.30 (16.03) | <0.001 |
| Age at ACL injury, n (%) | |||
| < 25 years | 560 (40.8) | 1606 (21.7) | |
| 25–50 years | 701 (51.0) | 3650 (49.4) | |
| ≥ 50 years | 113 (8.2) | 139 (28.9) | <0.001 |
| Obesity, n (%) | 48 (3.5) | 245 (3.3) | 0.733 |
| Meniscus tear, n (%) | |||
| Never | 709 (51.6) | 6560 (88.7) | |
| With surgerya | 479 (34.9) | 259 (3.5) | |
| Without surgery | 186 (13.5) | 576 (7.8) | <0.001 |
| Knee arthroscopyb, n (%) | 552 (40.2) | 898 (10.1) | <0.001 |
| OA patientsc, n (%) | 271 (19.7) | 1874 (25.3) | <0.001 |
| TKR casesd, n (%) | 5 (0.4) | 154 (2.1) | <0.001 |
a These surgeries included meniscus repair, meniscectomy, and other ACL-associated surgeries.
b Other arthroscopic surgeries, not including meniscus- or ACL-associated arthroscopic surgery.
c These are osteoarthritis (OA) patients.
d TKR: Total knee replacement.