Y-Osteotomy for Correction of Residual Postoperative Thoracic Kyphotic Deformity in a Patient With Ankylosing Spondylitis

Ankylosing spondylitis (AS) is a chronic inflammatory disease that mainly affects the thoracic spine leading to severe kyphosis. This results in severe functional impairment and sagittal plane imbalance. Surgery is commonly recommended; however, there are many challenges that a spine surgeon may encounter. Several osteotomy techniques have been described to correct these deformities. We describe the use of a relatively novel technique, Y-shape osteotomy, as a surgical option for residual postoperative thoracic kyphotic deformity in a patient with AS with good clinical and radiological outcomes.