There is no specific test to diagnose ankylosing spondylitis, but imaging by X-ray and MRI may show evidence of inflammation of the sacroiliac joint between the sacrum (the triangular bone at the lowest part of the back) and the ilium (the bone felt on the upper part of the hip). Some symptoms include:
Inflammatory back pain (gradual in onset, lasting over three months, with stiffness and pain that is worse in the morning and improved with movement)
Reduced mobility of the spine
If you have rheumatoid arthritis and joint pain, start today getting the support you need from WebMD’s Arthritis and Joint Pain Support Group. Available 24/7, you can share ideas, compare conventional and alternative treatments, and talk about ways to make day-to-day living easier with arthritis.
Blog: Arthritis Relief and Joint Replacement
Discover the latest findings about rheumatoid arthritis, osteoarthritis, joint replacement, and more. In WebMD’s Arthritis Relief and Joint Replacement blog, Dr. Ira Kirschenbaum shares professional and practical advice on symptoms, prevention, and treatment of RA and other types of arthritis.
Message Board: Joint Replacement: Ira H. Kirschenbaum, MD
Need joint replacement surgery for a hip, knee, ankle, or shoulder? Discuss joint replacement with Dr. Kirschenbaum and others considering joint replacement surgery on WebMD’s Joint Replacement message board.