An arthrogram involves injecting contrast dye into the shoulder capsule before an MRI to better visualize the labrum's detachment from the glenoid fossa.

“For folks listening who don't know what that is, an arthrogram is an MRI where prior to you going in the scanner, the radiologist takes a needle about yay long, right? Like 4 in long, shoots the needle into the capsule and injects contrast so that it really allows the MRI to show the labum and how much it's detached uh from the gleoid fossa.”