Cervical osteotomy by the Simmons method in the treatment of cervical kyphosis due to ankylosing spondylitis. Case report.

Ankylosing spondylitis can produce severe kyphosis in the spine. This is rarer in the cervical spine than in the thoracolumbar region, but it is also more invalidating as it may make it impossible for the patient to look forward as well as causing difficulty in mastication, swallowing and speaking. To correct cervical kyphosis, vertebral osteotomy is performed at the apex of the deformity. The authors present a case of cervical kyphosis due to ankylosing spondylitis successfully treated by the Simmons method.