Reliability of muscle stiffness measures in popliteus, medial and lateral gastrocnemius muscles by ultrasound shear wave elastography in participants with knee osteoarthritis accompanied by myofascial trigger points

Table 3 Intra- and Inter-rater Reliabilities of SWE for Mean Shear Modulus of popliteus and medial and lateral gastrocnemius muscles

Reliability		Muscle	ICC (95%CI)	SEM	MDC	CV (%)
Intra-rater (Inter-day)	First Examiner	PM	0.968 (0.932—0.985)	0.52	1.43	23.03
		GM	0.922 (0.835—0.963)	0.84	2.29	20.08
		GL	0.912 (0.815—0.958)	0.96	2.62	22.69
	Second Examiner	PM	0.986 (0.971—0.993)	0.36	0.99	26.29
		GM	0.955 (0.905—0.979)	0.61	1.68	22.43
		GL	0.942 (0.878—0.972)	0.79	2.16	24.70
Inter-rater	Test	PM	0.956 (0.908—0.979)	0.65	1.78	25.33
		GM	0.905 (0.801—0.955)	0.91	2.49	22.16
		GL	0.927 (0.848—0.969)	0.92	2.52	24.91
	Retest	PM	0.932 (0.858—0.968)	0.78	2.13	24.59
		GM	0.766 (0.509—0.889)	1.43	3.94	22.59
		GL	0.875 (0.737—0.940)	1.12	3.07	22.93

SWE Shear Wave Elastography, PM popliteus muscle, GM medial gastrocnemius, GL lateral gastrocnemius, ICC intraclass correlation coefficient, SEM standard error of measurement, MDC minimal detectable change, CV coefficient of variation

ISSN: 1471-2474