Smith - Petersen Osteotomy for t he Treatmen t of Anderson Lesion with Kyphosis i n Ankylosing Spondylitis ： A Case Report a nd Literature Review

Andersson lesion (AL) is an uncommon manifestation of ankylosing spondylitis (AS) first described by Andersson in 1937. Few data are available on Anderson lesion in AS because of the lack of proper diagnostic criteria and the differences in the extent of spinal survey undertaken.Multiple types of surgery have been applied in the treatment for AL. However, the most effective and safe surgical procedure for AS-related symptomatic kyphosis is still controversial. We reported a case of surgical strategy with Smith-Petersen osteotomy (SPO) for AL-complicating with AS patient presenting severe kyphosis. The patient acquired excellent clinical results and returned to work without any physical complaints. The Smith-Petersen osteotomy (SPO) surgery may offer a useful choice for AL-complicating AS patients with severe kyphosis deformity