Ultrasound alone is likely not enough to guide prognosis of hamstring injuries, according to a study of 67 soccer players. Fifty-one hamstring injuries were evaluated sonographically. "The 51 acute hamstring injuries [studied] resulted in absence from soccer of a mean 25.4 ± 15.7 days per injury, with no significant difference between players with and without sonographically verified abnormalities," researchers said.

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