Table 1. Studies included in the review.

Authors	Year	Study design	Level of evidence	No. shoulders	Sex no. (male/female)	Age (y) mean ± SD	Final follow-up (mo) mean ± SD
Razmjou et al (Knee Surg Sports Traumatol Arthrosc)	2015	Retrospective outcome study	II	184	112/72	62 ± 9	24
Park et al (Am J Sports Med)	2015	Randomized controlled trial	I	58 (47 analyzed)	9/38	62.6 ± 9.31	44.45
						61.7 ± 6.12
Oh et al (Am J Sports Med)	2014	Randomized controlled trial	I	78	44/34	63.6 ± 6.5	29.2
						64.0 ± 7.5
Błasiak et al (Pol Orthop Traumatol)	2013	Retrospective outcome study	III	40	43/17	53.10 ± 13.60	54.4 ± 6.4
Kim et al (Arch Orthop Trauma Surg)	2011	Randomized controlled trial	II	83	40/43	59.8 ± 5.2	31.7
						55.2 ± 6.1

Abbreviation: SD, standard deviation.

Note: Year of publication, study design, level of evidence, and patients information are described.