34. Grade Description MRI US
I
microscopic tear
or strain injury
edema superficial
to the ligament
hypoechoic fluid
parallel to the
ligament
II partial tear
edema superficial
to the ligament
extending partially
through the
ligament
hypoechoic fluid
and thickening of
the ligament
III complete tear
complete disruption
of the ligament
(discontinuity)
complete
disruption of the
ligament with
hematoma
Injuries to the medial collateral injury are divided
into three grades similarly to other ligamentous
lesions elsewhere.