Help Interpreting my MRIs

Hi, Thanks for any help you can offer! I'm a male in my late 40s and have had AS since my late 20s.

It flared really badly about 3-4 years ago and hit my thoracic and cervical spine hard. After that, I got on Humira which caused my CRP to plummet down to normal levels.

Unfortunately, I was still left with extremely restricted ROM in my thoracic and cervical spine. I can turn my head about 45 degrees to look over my shoulders, can barely tilt it at all side-to-side and can't quite tilt it back far enough to finish a glass of water. It's pretty awful.

My thoracic spine barely moves at all. I've tried foam roller exercises, but my spine makes violent jerking/popping motions and I'm a little concerned I might break something. it also doesn't feel like it's stretching, so I'm not sure that PT would really help.

Recently, I pressed my Rheumatologist to order me MRIs as a way of seeing if there's still inflammation restricting my ROM.

He emailed me after the MRIs to tell me that they didn't show inflammation, so switching biologics wouldn't help. He also said I should consider seeing a spine specialist and he recommended a neurosurgeon and an orthopedic surgeon.

Today, I went and got the written MRI reports and I'll post them in the next post. If you guys can tell me what they mean and whether they explain the restricted ROM I'd greatly appreciate it!