Precision of computed tomography and cartilage-reproducing image reconstruction method in generating digital model for potential use in 3D printing of patient-specific radial head prosthesis: a human cadaver study

Table 1 Mean, SD, range and statistical analysis of diameter, thickness, and articular depth

	3Dmodel-CTA	3Dmodel-CT	3Dmodel-CIRM	Friedman test (p-value)	Pairwise comparisons (Bonferroni correction)
	mean ± SD range (mm)	mean ± SD range (mm)	mean ± SD range (mm)	Friedman test (p-value)	3Dmodel-CTA vs. 3Dmodel-CT (p-value)	3Dmodel-CTA vs. 3Dmodel-CIRM (p-value)	3Dmodel-CIRM vs. 3Dmodel-CT (p-value)
Diameter along coronal plane	21.85±0.99 20.68–23.55	20.86±0.94 19.94–22.81	21.66±0.91 20.64–23.39	0.002*	0.003*	1.000	0.018
Diameter along sagittal plane	22.39±1.52 20.45–24.13	21.51±1.43 19.34–23.62	22.07±1.49 19.83–24.03	0.001*	0.001*	0.401	0.073
Thickness at medial rim	10.98±1.23 9.24–12.32	9.91±0.96 8.55–11.57	10.75±1.05 9.26–12.30	0.002*	0.003*	1.000	0.018
Thickness at lateral rim	8.46±0.9 6.74–9.61	7.5±0.97 5.91–9.18	8.35±0.94 6.61–9.82	0.002*	0.008*	1.000	0.008*
Articular disc depth	2.03±0.20 1.71–2.38	1.63±0.19 1.35–1.91	1.75±0.12 1.58–1.94	0.002*	0.001*	0.037	0.952

*significant at p-value < 0.01
3Dmodel-CTA 3D model from CT arthrography, 3Dmodel-CT 3D model from CT scan, 3Dmodel-CIRM 3D model from cartilage-reproducing image reconstruction method

ISSN: 2365-6271