Table I.
Patient cohort characteristics.
| Characteristic | n | Female (n = 46) | Male (n = 44) | Combined (n = 90) | p-value |
|---|---|---|---|---|---|
| Age, yrs | 90 | < 0.001* | |||
| Median (IQR) | 18 (16 to 21) | 26 (21 to 33) | 21 (18 to 28) | ||
| Mean (SD) | 20 (5.7) | 28.1 (9.0) | 24.0 (8.5) | ||
| rACLR on dominant leg, % (n) | 72 | 0.81† | |||
| No | 49 (19/39) | 52 (17/33) | 50 (36/72) | ||
| Yes | 51 (20/39) | 48 (16/33) | 50 (36/72) | ||
| rACLR graft type, % (n) | 90 | 0.34† | |||
| Autograft BTB | 52 (24/46) | 39 (17/44) | 46 (41/90) | ||
| Autograft hamstring | 13 (6/46) | 23 (10/44) | 18 (16/90) | ||
| Allograft | 35 (16/46) | 39 (17/44) | 37 (33/90) | ||
| Returned to play, % (n) | 72 | 0.25† | |||
| No | 44 (17/39) | 30 (10/33) | 38 (27/72) | ||
| Yes | 56 (22/39) | 70 (23/33) | 63 (45/72) | ||
| Time to return to play, mths | 42 | 0.42* | |||
| Median (IQR) | 7.2 (6.0 to 9.8) | 9.0 (6.0 to 10.5) | 8.5 (6.0 to 10.0) | ||
| Mean (SD) | 8.9 (4.7) | 10.3 (6.8) | 9.6 (5.8) | ||
| Returned at same or higher level, % (n) | 72 | 0.48† | |||
| No | 56 (22/39) | 45 (15/33) | 51 (37/72) | ||
| Yes | 44 (17/39) | 55 (18/33) | 49 (35/72) | ||
| Currently playing, % (n) | 72 | 0.73† | |||
| No | 82 (32/39) | 79 (26/33) | 81 (58/72) | ||
| Yes | 18 (7/39) | 21 (7/33) | 19 (14/72) | ||
| If didn’t return, was knee the primary reason for not returning?, % (n) | 58 | > 0.999† | |||
| No | 28 (9/32) | 31 (8/26) | 29 (17/58) | ||
| Yes | 72 (23/32) | 69 (18/26) | 71 (41/58) |
*
Mann-Whitney U test.
†
Chi-squared test.
BTB, bone-patellar tendon-bone; IQR, interquartile range; rACLR, revision anterior cruciate ligament reconstruction; SD, standard deviation.