Shelly et al used a simple grading system to describe the changes seen on MRI following a hamstring injury. The authors are from Mater Misericordiae University Hospital in Dublin, Ireland.
Patient selection: athlete with hamstring injury
Parameters:
(1) distribution of T2 hyperintense signal
(2) disruption of fibers
T2 Hyperintense Signal
Fiber Disruption
Grade
none
none
0
around muscle or tendon
none
I
around and within muscle or tendon
less than half of tendon or muscle width
II
around and within muscle or tendon
over half the muscle or tendon width
III
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