Table 2.

Demographic data of the study groups

	Total (n = 2,848)	Paediatric (n = 47)	Adolescent (n = 522)	Young adult (n = 2,279)
Gender
Male	1,699 (59.7%)	34 (72.3%)	208 (39.8%)	1,457 (63.9%)
Female	1,149 (40.3%)	13 (27.7%)	314 (60.2%)	822 (36.1%)
Age at index surgery	25.0 (5.7) 25 (9; 35)	13.6 (1.6) 14 (9; 15)	17.4 (1.4) 18 (14; 19)	27.0 (4.5) 26 (20; 35)
Activity at ACL injury
Pivoting sports	1,759 (61.8%)	23 (48.9%)	355 (68.0%)	1,381 (60.6%)
Non-pivoting sports	64 (2.2%)	1 (2.1%)	12 (2.3%)	51 (2.2%)
Martial arts	75 (2.6%)	1 (2.1%)	8 (1.5%)	66 (2.9%)
Winter sports	382 (13.4%)	8 (17.0%)	62 (11.9%)	312 (13.7%)
Other	560 (19.7%)	14 (29.8%)	85 (16.3%)	461 (20.2%)
Missing	8 (0.3%)	0	0	8 (0.4%)
Groups of femoral fixation
Cortical suspensory fixation	1,234 (43.3%)	32 (68.1%)	209 (40.0%)	993 (43.6%)
Adjustable cortical suspensory fixation	416 (14.6%)	11 (23.4%)	73 (14.0%)	332 (14.6%)
Screw fixation	340 (11.9%)	1 (2.1%)	72 (13.8%)	267 (11.7%)
Intratunnel transfixation	828 (29.1%)	3 (6.4%)	165 (31.6%)	660 (29.0%)
Other	17 (0.6%)	0	3 (0.6%)	14 (0.6%)
Femur fixation missing	13 (0.5%)	0	0	13 (0.6%)
Groups of tibial fixation
Cortical suspensory fixation	22 (0.8%)	0	3 (0.6%)	19 (0.8%)
Adjustable cortical suspensory fixation	147 (5.2%)	4 (8.5%)	32 (6.1%)	111 (4.9%)
Screw fixation	1,981 (69.6%)	36 (76.6%)	360 (69.0%)	1,585 (69.5%)
Bioabsorbable screw	544 (19.1%)	4 (8.5%)	101 (19.3%)	439 (19.3%)
Intratunnel transfixation	82 (2.9%)	0	17 (3.3%)	65 (2.9%)
Other	52 (1.8%)	3 (6.4%)	8 (1.5%)	41 (1.8%)
Tibial fixation missing	20 (0.7%)	0	1 (0.2%)	19 (0.8%)
Concomitant injuries
Medial meniscus	1,063 (37.3%)	13 (27.7%)	185 (35.4%)	865 (38.0%)
Lateral meniscus	690 (24.2%)	14 (29.8%)	143 (27.4%)	533 (23.4%)
Cartilage injury	956 (33.6%)	5 (10.6%)	126 (24.1%)	825 (36.2%)
MCL	18 (0.6%)	0	1 (0.2%)	17 (0.7%)
LCL	6 (0.2%)	0	1 (0.2%)	5 (0.2%)

ACL Anterior cruciate ligament, LCL Lateral collateral ligament, MCL Medial collateral ligament