Orthopaedics Features of Ankylosing spondylitis (AS) include all of the following EXCEPT: A Fibrous ankylosis is pa of pathogenesis of AS B Bony ankylosis is pa of pathogenesis of AS C Roos test is used to test for Sacroilitis D Marginal syndesmophytes are seen on X-ray 💡 Explanation Features of Ankylosing spondylitis (AS) include all of the following EXCEPT: ✓ Correct Answer: C. Roos test is used to test for Sacroilitis