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Table 1 Main characteristics of the included studies

From: Surgical intra- and extra-articular anterior cruciate ligament reconstruction: a meta-analysis

Author Country Groups of reconstruction Person M/F Knee Age Time before surgery (months) Inclusioninterval Follow-up(range, months) Studydesign Grafts used in ACLR LOE Meniscus
Injury (medial
/lateral/both)
Lee, 2019 [21] Korea ACLR 45 34/11 45 27.3 ± 7.6 NA 3.2011–1.2013 41.5 ± 8.2 R Gracilis tendon allograft (fresh frozen) 3 24
25
ACLR+ALLR 42 33/9 42 26.8 ± 6.1 2.2013–7.2014 38.2 ± 6.9
Helito, 2018 [17] Brazil ACLR 68 59/9 68 33.9 ± 6.1 14 (12–30.5) 1.2011–6.2012 26 (24–29) R Gracilis and semitendinosus tendons 3 27
ACLR+ALLR 33 30/3 33 33.1 ± 8.8 15 (13–18) 2014–2015 25 (24–28) Gracilis and semitendinosus tendons 13
Imbert, 2017 [22] Italy ACLR 32 NA 32 NA NA NA duringsurgery P Autologous semitendinosus and gracilis tendons 3 NA
ACLR+EAR 32 NA 32 NA Autologous semitendinosus and gracilis tendons
Ibrahim, 2017 [25] Kuwait ACLR 50 50/0 50 26 (21–32) 3 (2.0–4.6) 1.2014–6.2014 27 (25–30) P Gracilis and semitendinosus tendons 2 9/7/3
ACLR+ALLR 53 53/0 53 26 (20–30) 3 (2.0–4.4) 27 (25–30) 10/8/4
Sonnery-Cottet, 2017 [18] France ACLR 176 116/60 176 23.5 ± 4 4.5 ± 6.2 1.2012–5.2014 41 ± 6 7.0 R Autogenous hamstring tendons 2 39/28/14
55/36/34
ACLR+ALLR 221 152/69 221 21.8 ± 4 5.3 ± 9.0 35.4 ± 8.4 Autogenous hamstring tendons 34/13/17
ACLR 105 96/9 105 22.1 ± 3.7 6 ± 15.2 39.2 ± 8.8 Bone-patellar tendon-bone graft
Zhang, 2016 [10] China SB-ACLR 20 13/7 20 22.3 ± 5.3 12.3 ± 4.3 7.2012–7.2015 3/6/12 P Semitendinosus and gracilis tendons 2 NA
DB-ACLR 20 14/6 20 28.3 ± 6.1 14.2 ± 4.6
SB-ACLR+ALLR 20 12/8 20 26.3 ± 6.8 16.3 ± 3.6
Ferretti, 2016 [11] Italy ACLR 71 51/20 71 27.3 (18–50) 4 1.2002–12.2003 125 (121–128) R Semitendinosus and gracilis tendons 3 49
41
ACLR+EAR 68 56/12 68 25.7 (18–46) 126 (122–130)
Trichine, 2014 [29] Algeria ACLR 52 52/0 60 27.7 ± 4.75 37.78 5.2007–7.2010 23.4 (6–45) P Patellar tendon 2 28/23
ACLR+EAR 55 55/0 60 28.6 ± 4.69 35.48 24.5 (6–63) 14/16
Vadalà, 2013 [30] Italy ACLR 28 0/28 28 28 (15–40) NA 1.2005–12.2006 43.1 (36–50) P Semitendinosus and gracilis tendons 3 11
ACLR+EAR 27 0/27 27 26 (15–40) 45.2 (38–50)
Monaco, 2007 [28] Italy ACLR 10 10/0 10 27 (17–40) 36 (6–72) 4.2006–5.2006 duringsurgery P Semitendinosus and gracilis tendons 3 10
ACLR+EAR 10 10/0 10 27 (17–40)
Zaffagnini, 2006 [31] Italy ACLR 25 15/0 25 31.3 (26–49) 6 (1–12) 1998–2003 60 P Semitendinosus and gracilis tendons 2 NA
ACLR 25 16/9 25 30.5 (22–47) Bone-patellar tendon-bone graft
ACLR+EAR 25 18/7 25 26.7 (15–44) Semitendinosus and gracilis tendons
Anderson, 2001 [23] USA ACLR 35 23/12 35 20.1 (14–38) 0.5–3 1991–1993 35.9 ± 11.7 P Semitendinosus and gracilis tendons 2 NA
ACLR 35 23/12 35 23.6 (14–44) 34.6 ± 11.4 Bone-patellar tendon-bone graft
ACLR+EAR 35 22/13 35 22 (14–40) 35.7 ± 12.1 Semitendinosus and gracilis tendons
  1. ACLR anterior cruciate ligament reconstruction; ALLR anatomic anterolateral ligament reconstruction; EAR extra-articular reconstruction; M male; F female; P prospective; R retrospective; LOE level of evidence; NA not available