Table 1. Details of included studies.

Study	Year	Study type	Group	Country	Sample size	F/M	Mean age	Follow-up
Cho et al.	2012	RCT	ASR	South Korea	30	13/17	55.5y	6m
			MOR		30	13/17	56.2y	6m
Chung et al.	2013	Prospective	ASR	South Korea	225	160/128	59.5y	22.8m
			MOR		41
			OP		22
Colegate-Stone et al.	2009	Retrospective	ASR	United Kingdom	92	48/44	57y	24m
			MOR		31	15/16	62y	24m
Kang et al.	2007	Retrospective	ASR	USA	65	NG	NG	6m
			MOP		63			6m
Kasten et al.	2011	RCT	ASR	Germany	17	8/9	60.1y	6m
			MOR		17	5/12	60.1y	6m
Kim et al.	2003	Retrospective	ASR	South Korea	42	15/27	55y	39m(24–72)
			MOR		34	22/12	55y	39m(24–72)
Kose et al.	2008	Retrospective	ASR	Turkey	25	18/7	55y	31.20m
			MOR		25	21/4	62y	21.56m
Liem et al.	2007	Retrospective	ASR	Germany	19	3/16	61.9y	25.0m
			MOR		19	3/16	62.1y	17.6m
Nové-Josserand et al.	2011	Retrospective	ASR	France	154	71/183	50.5y	NG
			MOR
Osti et al.	2010	Retrospective	ASR	Italy	32	17/15	56.1y	30.6m
			MOR		32	14/18	56y	31m
Pearsall et al.	2007	Prospective	ASR	USA	25	14/11	58y	50.6m
			MOR		27	17/10	55y	50.6m
Sauerbrey et al.	2005	Retrospective	ASR	USA	26	10/16	56y	19m
			MOR		28	12/16	57y	33m
Severud et al.	2003	Retrospective	ASR	USA	35	NG	NG	44.6m
			MOR		29			44.6m
Verma et al.	2006	Retrospective	ASR	USA	38	16/22	59.4y	24m
			MOR		33	10/23	60.7y	24m
Warner et al.	2005	Retrospective	ASR	USA	9	4/5	53y	44m
			MOR		12	4/8	55y	44m
Youm et al.	2005	Retrospective	ASR	USA	42	NG	60y	37.6m
			MOR		42		59y	37.6m
Zhang et al.	2014	RCT	ASR	China	55	27/28	53.9y	29.4m
			MOR		53	26/27	54.2y	29.4m
Zwaal et al.	2013	RCT	ASR	The Netherlands	47	18/29	57.2y	56w
			MOR		48	20/28	57.8y	56w

RCT: Randomized controlled trial; ASR: Arthroscopic Repair; MOR: Mini-open repair; Y: Years; M: Months; W: Weeks.