Methods: Two water skiers and two bull riders sustained complete rupture of the proximal origin of the hamstring muscles. All underwent repair of the hamstring origin and sciatic nerve neurolysis. A ...

A Grade 2 hamstring strain could be anything from approximately one per cent of the muscle to 95-99 per cent of the muscle, so it’s a very non-precise grading of the significance of the damage.

Dak Prescott underwent an MRI on his injured hamstring, and it's a significant injury that could keep him out weeks. Jane Slater of NFL Media reports that the initial diagnosis is a partial ...