Inflammatory arthritides of the spine: surgical versus nonsurgical treatment.

Ankylosing spondylitis and rheumatoid arthritis are disorders that cause marked alterations in the structure and function of the axial skeleton. Ankylosing spondylitis causes calcification of spinal structures causing limited motion. Rheumatoid arthritis causes synovial hypertrophy, joint destruction, and spinal instability. Surgical therapy for patients with ankylosing spondylitis corrects angular deformities with spinal osteotomies, and stabilization for spinal fractures. Spinal operative therapy for rheumatoid arthritis concentrates on correction of abnormal motion in the cervical spine. Advances in the medical therapy of spondyloarthritis have resulted in control of the inflammation of the axial skeleton halting the damage to spinal structures. The new biologic therapies for ankylosing spondylitis prevent progression of disease. Similarly, these same biologic therapies can also control the progression of rheumatoid arthritis including the cervical spine. The new medical therapies are very effective in preventing joint damage. The need for surgical intervention for patients with ankylosing spondylitis and rheumatoid arthritis will become a rare event in the setting of the new medical therapies for these inflammatory arthropathies.