Patient-Specific or Conventional Instrumentations: A Meta-analysis of Randomized Controlled Trials

Table 1

Baseline characteristics of included RCTs.

Study	Sample size		Image acquisition	Age		Follow-up time (month)	Gender (male/female)
	PSI	CI		PSI	CI
Van 2018	44	50	MRI			24	PSI: 14/30; CI: 18/32
Maus 2018	59	66	MRI			3	PSI: 26/33; CI: 23/43
Schotanus 2018	83	80	MRI			24	Unspecified
Davide 2018	12	12	Unspecified			0.1	PSI: 3/9; CI: 2/10
Nienke 2018	21	21	MRI			12	PSI: 8/13; CI: 12/9
Vide 2017	47	48	MRI			Unspecified	PSI: 15/32; CI: 15/33
De Vloo 2017	20	24	MRI			2.7	PSI: 11/14; CI: 10/15
Abane 2017	67	65	CT			3	PSI: 40/30; CI: 41/29
Huijbregts 2016	69	64	MRI			12	PSI: 29/40; CI: 32/32
Boonen 2016	82	81	MRI			57	PSI: 34/56; CI: 40/50
Yan 2015	30	30	MRI			3	PSI: 13/17; CI: 6/24
Molicnik 2015	19	19	MRI			Unspecified	Unspecified
Kotela 2015	49	46	CT			12	PSI: 16/33; CI: 13/33
Abane 2015	59	67	MRI	67.8	70.4	3	52/88
Woolson 2014	22	26	CT	Unspecified		PSI: 9.5; CI: 10.8	PSI: 22; CI: 26
Victor 2014	61	64	MRI	67	66	Unspecified	PSI: 21/43; CI: 21/43
Silva 2014	23	22	MRI	73	74	Unspecified	Unspecified
Pfitzner 2014	60	30	MRI/CT	65	64	3	PSI: 26/34; CI: 13/17
Chotanaphuti 2014	40	40	CT			1.4	70/10
Kotela 2014	52	60	CT			12	PSI: 16/33; CI: 13/33
Abdel 2014	20	20	MRI	71	71	3	PSI: 8/12; CI: 8/12
Roh 2013	42	48	CT			Unspecified	PSI: 3/39; CI: 5/43
Parratte 2013	20	20	MRI	50-85		3	Unspecified
Hamilton 2013	26	26	CT	68.1	67.6	18	PSI: 14/12; CI: 7/19
Boonen 2013	90	90	MRI			24	PSI: 34/56; CI: 40/50
Chareancholvanich 2013	40	40	MRI	69.5	70.3	Unspecified	PSI: 6/34; CI: 4/34
Vundelinckx 2013	31	31	MRI			7.2	PSI: 15/16; CI: 11/20
Pietsch 2013	40	40	MRI			2.8	PSI: 13/27; CI: 19/21
Noble 2012	15	14	MRI	65.4	68	Unspecified	PSI: 8/7; CI: 6/8

Abbreviations: PSI: patient-specific instrumentation; CI: conventional instrumentation; CT: computed tomography; MRI: magnetic resonance imaging.