Table 1.

Generalities, demographic data and related PEDro scores of the included studies concerning the DB graft

Author, year	Type of study	PEDro score	Knees (n)	Mean age	Time injury to surgery	Mean follow-up (months)
Astur et al. 2015 [11]	RCT	8	28	28.32		60.00
Bitar et al. 2012 [21]	PCS	7	56	23.00		19.30
Christiansen et al. 2008 [22]	PCS	6	32	22.00	84.00	22.00
Csintalan et al. 2014 [23]	CS	5	56	24.30	86.40	51.00
Deie et al. 2011 [24]	RCS	5	31	22.20		39.00
Feller et al. 2014 [25]	RCS	5	26	24.40	88.80	42.00
Fink et al. 2014 [26]	PCS	7	17	21.50		12.00
Goncaives et al. 2011 [27]	PCS	6	22	28.60	141.00	26.20
Hinterwimmer et al. 2013 [28]	RCS	6	19	23.00		16.00
Kang et al. 2013 [29]	RCT	8	82	28.75		24.00
Kita et al. 2015 [30]	PCS	7	44	25.40	156.00	39.00
Krishna Kumar et al. 2014 [31]	PCS	7	30	18.00	33.53	25.00
Kumahashi et al. 2012 [32]	PCS	6	5	13.60	19.00	27.80
Kumahashi et al. 2016 [33]	PCS	7	17	22.00	61.00	45.00
Li et al. 2014 [34]	PCS	7	65	29.40		78.50
Lind et al. 2016 [35]	PCS	8	24	12.50		39.00
Lind et al. 2016 [35]	PCS	8	179	23.00		41.00
Lin et al. 2015 [36]	RCS	5	18	N/R		35.00
Lippacher et al. 2014 [37]	RCS	7	68	18.30		24.70
Ma et al. 2013 [38]	RCT	8	32	28.40	26.00	40.00
Matsushita et al. 2014 [39]	RCS	6	21	22.10		44.00
Matsushita et al. 2014 [39]	RCS	6	18	23.50		38.00
Niu et al. 2017 [40]	PCS	7	30	25.00		55.10
Panni et al. 2011 [41]	CS	5	48	25.00	12.00	33.00
Ronga et al. 2009 [42]	PCS	5	37	28.00		37.00
Sadigursky et al. 2016 [43]	PCS	7	31	29.38		12.00
Smith et al. 2014 [44]	RCS	6	21	23.00	95.00	12.00
Suganuma et al. 2016 [45]	RCS	6	18	20.70		51.60
Suganuma et al. 2016 [45]	RCS	6	28	20.30		48.00
Thaunat et al. 2007 [46]	RCS	5	23	22.00		28.00
Toritsuka et al. 2011 [47]	CS	6	20	23.80		30.00
Wang et al. 2013 [46]	RCS	7	44	26.00		48.00
Wang et al. 2016 [48]	RCS	6	26	26.30		38.20
Wantabe et al. 2008 [49]	RCS	7	29	19.00	43.20	51.60
Zhang et al. 2019 [50]	PCS	7	60	21.00	12.00	96.00

RCT randomized clinical trial, PCS prospective cohort study, RCS retrospective cohort study, CS case series