Ankylosing Spondylitis: From Cells to Genes

Table 1

Modified New York criteria 1984 for ankylosing spondylitis [5].

Clinical criteria
(i) Low back pain and stiffness for longer than 3 months, which improve with exercise but are not relieved by rest.
(ii) Limitation of motion of the lumbar spine in both the sagittal and frontal planes.
(iii) Limitation of chest expansion relative to normal values correlated for age and sex.
Radiological criterion
Sacroilitis grade ≥ 2 bilateral, or grade 3-4 unilateral.

For definite ankylosing spondylitis the radiological criterion and at least one clinical criterion must be satisfied.