强直性脊柱炎(ankylosing spondylitis,AS)胸腰段后凸畸形截骨矫形时最需关注两方面的问题,一是矢状面脊柱-骨盆平衡的重建;二是颌眉角正确角度的矫正~([1-4])。AS胸腰段后凸畸形以腰椎前凸减小、胸腰段后凸为主要表现,兼顾到安全性及矫形效力,截骨通常选择在腰椎或胸腰段。但是,脊柱局部序列的恢复并非矢状面重建的惟一要素,脊柱矢状面一骨盆整体平衡的重建更为重要。只有恢复脊柱矢状面骨盆的整体平衡,使代偿的骨盆重置于中立位置,才能保证腰背肌群 Ankylosing spondylitis (AS) in the thoracolumbar kyphosis deformity orthopedic most need to focus on two issues, one is the reconstruction of the sagittal spine-pelvic balance; the second is the correct angle of jaw and eyebrow angle correction ~ ([1-4]). AS thoracolumbar kyphosis deformity to lumbar lordosis, thoracolumbar kyphosis as the main performance, taking into account the safety and effectiveness of orthopedic, osteotomy usually choose lumbar or thoracolumbar. However, the restoration of the spine local sequence is not the only element of sagittal reconstruction. The reconstruction of the overall balance of the pelvis and sagittal spine is more important. Only to restore the overall balance of the pelvis of the sagittal spine, the compensatory pelvis reset to a neutral position, in order to ensure that the back muscles