BACKGROUND: To report the radiological and clinical results after corrective osteotomy in @entity1691 @entity1 . Furthermore, this study intended to classify the types of @entity85 and to suggest appropriate surgical treatment options. METHODS: We retrospectively analyzed @entity1691 @entity1 who underwent corrective osteotomy between 1996 and 2009. The radiographic assessments included the sagittal vertical axis (SVA), spinopelvic alignment parameters, correction angle, correction loss, @entity85 related to the location of the apex, and the craniocervical range of motion (CCROM). The clinical outcomes were assessed by the @entity717 Index (ODI) scores. RESULTS: A total of 292 corrective osteotomies were performed in 248 @entity1 with a mean follow-up of 40.1 months (range, 24 to 78 months). There were 183 cases of single pedicle subtraction osteotomy (PSO), 19 cases of multiple Smith-Petersen osteotomy (SPO), 17 cases of PSO + SPO, 14 cases of single SPO, six cases of posterior vertebral column resection (PVCR), five cases of PSO + partial pedicle subtraction osteotomy (PPSO), and four cases of PPSO. The mean correction angles were 31.9      11.7   with PSO, 14.3      8.4   with SPO, 38.3      12.7   with PVCR, and 19.3      7.1   with PPSO. The thoracolumbar type was the most common. The outcome analysis showed a significant improvement in the ODI score (p < 0.05). Statistical analysis revealed that the ODI score improvements correlated significantly with the postoperative SVA and CCROM (p < 0.05). There was no correlation between the clinical outcomes and spinopelvic parameters. There were 38 surgery-related complications in 25 @entity1 (10.1%). CONCLUSIONS: Corrective osteotomy is an effective method for treating a fixed @entity85 occurring in @entity1691 , resulting in satisfactory outcomes with acceptable complications. The CCROM and postoperative SVA were important factors in determining the outcome.

Results of Corrective Osteotomy and Treatment Strategy for XXXX with @entity85 .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity85 :: ('MESH:D009140', 'Disease') :: ['deformity', 'kyphotic deformity', 'type of deformity'] @entity1691 :: ('MESH:D013167', 'Disease') :: ['ankylosing spondylitis'] @entity717 :: ('MESH:D009069', 'Disease') :: ['Oswestry Disability']
@entity1691 :: (MESH:D013167,Disease) :: ['Ankylosing Spondylitis']
