TABLE 2.
Baseline Characteristics by Cartilage Status at the Time of ACL Reconstructiona
| Study Cohort (N = 8470) | |||
|---|---|---|---|
| No Cartilage Lesions (n = 6222) | Partial-Thickness Cartilage Lesions (n = 1685) | Full-Thickness Cartilage Lesions (n = 563) | |
| Age at surgery, y, median (range) | 25 (9-69) | 32 (13-67) | 37 (14-66) |
| Time from injury to surgery, mo, median (range) | 8 (0-361) | 13 (0-430) | 18 (0-521) |
| Female sex | 3143 (50) | 730 (43) | 252 (45) |
| Previous ipsilateral knee surgery | 1347 (22) | 635 (38) | 250 (44) |
| Concomitant ligament injuryb | 398 (6) | 156 (9) | 67 (12) |
| Concomitant meniscal lesion | 2468 (40) | 893 (53) | 327 (58) |
| Meniscal resection | 1608 (26) | 652 (39) | 253 (45) |
| ACL graft | |||
| Hamstring tendon | 4728 (76) | 1307 (78) | 438 (78) |
| Bone–patellar tendon–bone | 1356 (22) | 361 (21) | 116 (21) |
| Other/unknown | 138 (2) | 17 (1) | 9 (1) |
| Area | |||
| <2 cm2 | NA | 1048 (62) | 248 (44) |
| ≥2 cm2 | NA | 573 (34) | 310 (55) |
| Not reported | NA | 64 (4) | 5 (1) |
| Location | |||
| Patella | NA | 393 (14) | 67 (10) |
| Trochlea | NA | 149 (5) | 45 (7) |
| Medial femoral condyle | NA | 1099 (39) | 344 (52) |
| Lateral femoral condyle | NA | 356 (13) | 82 (13) |
| Medial tibial plateau | NA | 411 (14) | 66 (10) |
| Lateral tibial plateau | NA | 417 (15) | 52 (8) |
| Preoperative KOOS value, mean ± SD | |||
| Pain | 75.6 ± 17.1 | 73.6 ± 18.5 | 69.8 ± 19.4 |
| Symptoms | 72.0 ± 17.8 | 70.4 ± 18.1 | 67.9 ± 19.0 |
| Activities of Daily Living | 84.8 ± 16.8 | 81.9 ± 18.4 | 78.4 ± 19.2 |
| Sport and Recreation | 43.6 ± 26.9 | 39.7 ± 27.1 | 36.1 ± 27.1 |
| Knee-Related Quality of Life | 34.8 ± 18.0 | 33.1 ± 18.3 | 31.0 ± 18.7 |
aData are shown as n (%) unless otherwise indicated. ACL, anterior cruciate ligament; KOOS, Knee injury and Osteoarthritis Outcome Score; NA, not applicable.
bMedial collateral ligament, lateral collateral ligament, posterior cruciate ligament, or posterolateral corner.