TABLE 2.

Summary of Articles Reporting Technical Accuracy and Angulation Deviations From Optimum Path of Navigated Screws

Year-Author (Reference)	Technical Accuracy (mm)	Angulation Error (°)
2016-Kleck et al8	5.9 ± 3.5	3.1 ± 2.1 (Both axial and sagittal)
2016-Guha et al9	1.8 ± 3.6 (Axial)	3.1 ± 2.9 (Axial)
	1.2 ± 1.2 (Sagittal)	3.6 ± 2.5 (Sagittal)
2013-Mathew et al10	Not measured	L4: 2.1 ± 2.6 (Axial) and 2.8 ± 2.1 (sagittal)
		L5: 2.7 ± 1.9 (axial) and 3.2 ± 2.6 (sagittal)
2016-Miller et al11	Not measured	2.2 ± 2.2 (Both axial and sagittal)
2011-Scheufler et al17	Not measured	Ranges between 0 and 4 (axial)
This study	2.2 ± 1.3	0.9 ± 0.8 (both axial and sagittal)