Fig. 3From: Clinical results and surgery tactics of spinal osteotomy for ankylosing spondylitis kyphosis: experience of 428 patientsTwo-level VCD osteotomy in a 38-year-old man: preoperative clinical photo (a) and radiographs (b) show 120° global kyphosis. Postoperative clinical photo (c) and lateral radiograph (d) after two-level VCD performed at L1 and L3 show his excellent sagittal alignment with the global kyphosis corrected to 15° and the osteotomy vertebrae were posterior column closing with anterior column opening just like shape “Y” (e, f). The local kyphosis of superior osteotomy vertebra (LK1) improved from preoperative 30° kyphosis (b) to postoperative 3° lordosis (d) and local kyphosis of inferior osteotomy vertebra (LK2) from preoperative 44° kyphosis (b) to postoperative 32° lordosis (d)Back to article page