How does being diagnosed with panic disorder affect military service?

Besides your two fractures and torn MCL, coupled with this anxiety disorder....you need to be prepared to be medically discharged. BUT.....if the evaluations determine you are still good to serve, then you will be put in an MOS that would be considered low stress (if that's even possible for the Army, really) and be on profile(s). Now, depending on what your anxiety is for, you could be placed on meds and continue to serve. Having panic disorders will not kill the Army for you, just means you're going to have left/right limitations. Seek mental therapy, do the physical therapy. I've known guys with bad PTSD from combat still serving. If they can, you can. But, it will be determined by the evaluation board(s).