welcome to hcm forum
as per your history you have not mention how many days old is the injury
and how did it occur.
with the mri
findings i would advised you that you dont require any ct scan
at the most you can get a xray of your kneee in ap and lateral view.
if the fracture
is undisplaced then you wil require immbolisation for 3-4 weeks in the plaster and rest.
wish you early recovery