Arthroereisis in juvenile flexible flatfoot: Which device should we implant? A systematic review of literature published in the last 5 years

Table 2 Risk of bias of the included studies

Ref.	Dutch checklist form for prognosis
	No participant selection took place	Groups are comparable regarding age	Validated measuring system used	Independent (blind) determination of outcomes	Clear description of groups available
Ruiz-Picazo et al[8], 2019	+	-	+	?	+
Pavone et al[16], 2019	+	+	+	-	+
Pavone et al[1], 2018	+	+	+	-	+
Memeo et al[26], 2019	+	+	+	?	+
Megremis et al[18], 2019	+	-	+	-	+
Martinelli et al[14], 2018	+	?	+	?	+
Kubo et al[20], 2020	+	+	+	?	+
Indino et al[28], 2020	+	-	+	?	+
Hsieh et al[15], 2019	+	+	+	-	+
Hagen et al[32], 2019	+	+	+	?	+
Hagen et al[31], 2020	+	+	+	?	+
Giannini et al[21], 2017	+	+	+	?	+
Faldini et al[24], 2018	+	+	+	-	+
Caravaggi et al[33], 2018	+	+	+	-	+
Bernasconi et al[27], 2020	+	+	+	?	+
Elmarghany et al[38], 2020	+	+	+	-	+

+: Low risk; -: High risk; ?: Unclear.