What are the clinical and radiographic characteristics of the axial arthritis occurring in IBD?
The clinical and radiographic characteristics and course of axial arthritis in IBD are similar to those of axial SpA (Ankylosing Spondylitis):
- • Occurs more commonly in men than in women (3:1).
- • Symptoms of inflammatory back pain are present: back pain and prolonged stiffness, particularly at night and upon awakening that improves with exercise and movement.
- • Physical examination reveals sacroiliac joint tenderness, loss of spinal motion, and sometimes reduced chest expansion.
- • X-ray and magnetic resonance imaging findings compatible with axial SpA.