Apex Osteotomy for AS Kyphosis

Most thoracolumbar ASK patients are treated with apex osteotomy. For patients with apex on T10–L4, apex osteotomy is also a favorable technique to achieve a sound outcome. As the spinal canal between T10 and L4 is relatively wide, it is not easy to lead to spinal stenosis after osteotomy and correction. As this segment is not constrained by the chest cage and ribs, it is easier to close the osteotomy gap of the lamina during hyperextension reduction. The osteotomy correction is performed on the apex; it is very effective to extend and lengthen the spine, and thus increase the body height. Therefore, thoracolumbar apex osteotomy is also an optional surgical technique.