Computerised tomography vs magnetic resonance imaging for modeling of patient-specific instrumentation in total knee arthroplasty

Table 2 Data assimilation of current patient-specific instrumentation literature

Ref.	Comparison	Type of study	System used	Imaging used	No. of patients	% outliers > 3%
Boonen et al[8]	PSI with disposable guides vs conventional intramedullary guides	Case control	Signature	MRI	40	29
Barrett et al[12]	PSI vs conventional - absolute mechanical axis measure	Prospective cohort study	Trumatch	CT	66	19
Bugbee et al[33]	PSI vs conventional	Retrospective cohort	Trumatch	CT	25	4
Chareancholvanich et al[13]	PSI vs conventional instrumentation	RCT	Zimmer	MRI	80	2.5
Koch et al[31]	PSI vs computer-navigated		My knee	CT	301	12.4
Chen et al[15]	PSI vs conventional TKA	Randomised control study	Zimmer PSI	MRI	30	31
Roh et al[32]	PSI vs conventional	RCT	Signature	CT	50	12

TKA: Total knee arthroplasty; PSI: Patient-specific instrumentation; CT: Computerised tomography; MRI: Magnetic resonance imaging; RCT: Randomised controlled trial.