Quantifying Region-Specific Elastic Properties of Distal Femoral Articular Cartilage: A Shear-Wave Elastography Study

Table 2

Inter- and intrarater reliability of IN, MFC, and LFC stiffness.

		Rater DWX in test 1	Rater DWX in test 2	Rater LM	ICC^a (95% CI)	ICC^b (95% CI)
IN (L)	(kPa)				0.91 (0.78-0.96)	0.96 (0.89-0.98)
	MDC (kPa)	4.29	4.44	4.60
	SEM (kPa)	1.55	1.60	1.66
IN (R)	(kPa)				0.98 (0.94-0.99)	0.97 (0.93-0.99)
	MDC (kPa)	4.67	5.15	4.78
	SEM (kPa)	1.69	1.86	1.73
MFC (L)	(kPa)				0.90 (0.77-0.96)	0.98 (0.95-0.99)
	MDC (kPa)	3.52	3.41	3.44
	SEM (kPa)	1.27	1.23	1.24
MFC (R)	(kPa)				0.90 (0.77-0.96)	0.92 (0.81-0.97)
	MDC (kPa)	4.55	4.34	4.58
	SEM (kPa)	1.64	1.57	1.65
LFC (L)	(kPa)				0.87 (0.70-0.96)	0.86 (0.68-0.94)
	MDC (kPa)	5.47	6.19	6.14
	SEM (kPa)	1.97	2.23	2.22
LFC (R)	D (kPa)				0.83 (0.63-0.93)	0.94 (0.87-0.98)
	MDC (kPa)	4.72	5.65	6.03
	SEM (kPa)	1.70	2.04	2.18

L: left sides; R: right sides; IN: intercondylar notch; MFC: medial femoral condyle; LFC: lateral femoral condyle; SD (kPa): standard deviation of kPa; ICC: intraclass correlation coefficient; 95% CI: 95% confidence interval; MDC (kPa): minimal detectable change of kPa; SEM (kPa): standard error of measurement of kPa; kPa: kilo Pascal. ^aIntrarater reliability. ^bInterrater reliability.