X-ray examination usually cannot detect ankylosing spondylitis directly, but it is helpful in the judgment of ankylosing spondylitis. In the early stage of the disease, it can be seen that the edge of the joints are worm-eaten and the gap is irregularly widened, and in the late stage, it will involve the hip joints and show bony ankylosis.
Ankylosing spondylitis is an autoimmune disease, the diagnostic conditions for bilateral sacroiliitis grade II ~ IV or unilateral sacroiliitis grade III ~ IV, and accompanied by any of the following conditions, lower back pain for at least three months, lumbar spine anterior flexion and posterior extension is limited, the range of the thorax expansion is smaller than the normal value of the same sex, age, and usually need to be combined with the HLA-B27 antigen test.
X-rays are part of the diagnosis of ankylosing spondylitis and usually need to be combined with a physical examination and imaging tests to determine ankylosing spondylitis. It should be detected and treated early, and if you experience symptoms of spinal discomfort, you should seek medical attention for examination.