Ultrasound shear wave speeds reduced following hamstring strain injury but not after returning to sport

Insights into Imaging

Table 2 Least square means [95% confidence interval (CI)] of shear wave speed (SWS) estimates

Time point	Limb	Least square mean of SWS (m/s) [95% CI]	Between-limb difference^a in SWS (m/s) [95% CI]	p-value
TOI	Injured	1.82 [1.68, 1.97]	0.23 [0.05, 0.41]	0.006
TOI	Uninjured	2.05 [1.91, 2.20]	0.23 [0.05, 0.41]	0.006
RTS	Injured	1.92 [1.76, 2.08]	0.15 [-0.05, 0.36]	0.23
RTS	Uninjured	2.08 [1.91, 2.24]	0.15 [-0.05, 0.36]	0.23
12wks	Injured	2.14 [1.95, 2.33]	-0.11 [-0.41, 0.18]	0.84
12wks	Uninjured	2.03 [1.84, 2.22]	-0.11 [-0.41, 0.18]	0.84