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What is A 25-year-old man complaints of low backache, decreased lumbar movements, morning stiffness which clinical examination will fuher help: and explain in detail?
ANKYLOSING SPONDYLITIS (AS)/MARIE-STRUMPELL OR BECHTEREW'S DISEASE Diagnostic Criteria-Modified New York Criterion CLINICAL CRITERIA Low back pain >= 3 months, improved by exercise and not relieved by rest Limitation of lumbar spine in sagittal and frontal planes Limitation of chest expansion (relative to normal values corrected for age and sex) RADIOLOGICAL CRITERIA Bilateral grade 2-4 sacroiliitis, or; Unilateral 3-4 sacroiliitis