Table 1.

Study characteristics

Study	Type of study	ELA vs. STA
		Average age (years)	No. of patients	No. of fractures
Takasaka 2016 [22]	Retrospective	Not specified	20 vs. 27	23 vs. 27
Kumar 2014 [23]	Prospective	30 vs. 31	21 vs. 21	23 vs. 22
Chen 2011 [24]	Prospective	32 vs. 31	40 vs. 38	40 vs. 38
Wang 2015 [25]	Retrospective	41 vs. 39	53 vs. 54	58 vs. 60
DeWall 2010 [26]	Retrospective	41 vs. 40	41 vs. 79	42 vs. 83
Basile 2016 [27]	Prospective	39 vs. 41	20 vs. 18	20 vs. 18
Kline 2013 [28]	Retrospective	42 vs. 46	79 vs. 33	79 vs. 33
Yeo 2015 [29]	Retrospective	42 vs. 46	60 vs. 40	60 vs. 40
Xia 2014 [30]	Prospective	37 vs. 38	49 vs. 59	53 vs. 64
Wu 2012 [31]	Retrospective	41 vs. 39	148 vs. 181	170 vs. 213
Weber 2008 [32]	Retrospective	40 vs. 42	26 vs. 24	26 vs. 24