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Table 2 Patient demographics and surgical characteristics for primary and revision ACL reconstruction

From: Comparison of concomitant injuries and patient-reported outcome in patients that have undergone both primary and revision ACL reconstruction—a national registry study

 Primary ACL reconstruction
n = 1014
ACL revision
n = 1014
Patient sex
 Female494 (48.7%)494 (48.7%)
 Male520 (51.3%)520 (51.3%)
 Age at ACL reconstruction21.5 (7.2)
19.0 (13.0; 49.0)
24.2 (7.5)
22.0 (14.0; 53.0)
 Time from primary ACL reconstruction to ACL revision (years) 2.7 (2.0)
2.0 (0.2; 12.3)
Activity at time of injury
 Soccer520 (51.4%)412 (40.9%)
 Floorball89 (8.8%)57 (5.7%)
 Handball76 (7.5%)58 (5.8%)
 Alpine83 (8.2%)47 (4.7%)
 Other244 (24.1%)434 (43.1%)
 Missing26
ACL graft choice
 Patellar tendon autograft 639 (64.4%)
 Hamstring tendon autograft1014 (100.0%)190 (19.1%)
 Quadriceps tendon autograft 83 (8.4%)
 Allograft 69 (6.9%)
 Other 12 (1.2%)
 Missing021
Tibial fixation
 Metal screw266 (26.5%)553 (55.5%)
 Resorbable screw182 (18.1%)171 (17.2%)
 AO screw226 (22.5%)42 (4.2%)
 Retro screw39 (3.9%)18 (1.8%)
 Intrafix/Rigidfix109 (10.9%)4 (0.4%)
 Endo-/Retrobutton/Tightrope52 (5.2%)75 (7.5%)
 Metal screw + staple/osteosuture109 (10.9%)92 (9.2%)
 Other21 (2.1%)41 (4.1%)
 Missing1018
Femoral fixation
 Endo-/Retrobutton/Tightrope645 (64.2%)458 (46.1%)
 Rigidfix/Transfix193 (19.2%)8 (0.8%)
 Metal screw150 (14.9%)509 (51.2%)
 Other17 (1.7%)19 (1.9%)
 Missing920
  1. For categorical variables, n (%) is presented
  2. For continuous variables, the mean (SD)/median (min; max)/n = is presented. ACL anterior cruciate ligament, n number