Ivy, a bone scan is much different than a Bone Densitrometry. For this test, you get an injection of radioactive material which then attaches itself to your blood cells. These then make their way to areas where there is increased bone activitiy from repair, Thise is used to determine if fractures, tumors or arthritic damage is present. It can also show if there is inflammation in the bone.
I am still in the early stages of Spondylitis and dont' have any real damage to my bones yet. However, the constant inflammation in my joints has irreparrably damaged my tendons, ligaments and synovium. I'm awaiting approvals for MRIs on my ankles to determine how much soft tissue damage there is and if I have AVN (avascular necrosis) in my ankles. When we are done sorting those out, we'll be looking at my sore knees.
I've heard many, including Doctors, refer to the joint aches we suffer as "Crohn's Arthritis". Technically, there is no such thing. The closest you can get is Enteropathic Spondyloarthropathy and most of us would fallinto the criteria of one form of Spondyloarthropathy (SpA) or another, whether that be outright Ankylosing Spondylitis (AS), Enteropathic Spondylitis, Psoriatic Arthitis (Spondyloarthropathy), etc. In fact, most with any form of SpA will eventually develop AS.
Anyoen interested in reading more about
these types of auto-immune, inflammatory arthritis can find some great info at SPONDYLITIS.ORG