Fig. 1From: Ultrasound shear wave speeds reduced following hamstring strain injury but not after returning to sportFlow chart for athletes included for analysis. Note that N refers to the number of unique athletes and n refers to number of imaging session. Abbreviations: 12wks, 12 weeks after return to sport clearance; MRI, magnetic resonance imaging; RTS, return to sport; SWS, shear wave speed; TOI, time of injuryBack to article page