If I had a shoulder injury a long time ago and it was a complete tear separating the acromium process from the clavicle will the Mri indicate that it is an old injury, and how can they tell if it does

This is not uncommon in accidents - scar tissue defines how recently the injury occurred.

Does the mri indicate scar tissue?

This is not uncommon in accidents - scar tissue defines how recently the injury occurred.

Does the mri determine scar tissue or would that be determined upon surgery?