Abstract
Objective To investigate the efficacy to cancellous ossification of spinal osteotomy for the treatment of ankylosing spondylitis kyphosis deformity and. Methods 34 patients with ankylosing spondylitis kyphosis in our Department from Jan 2014 January to Fab 2016 were selected and randomly divided into the observation group and the control group, the observation group used to cancellous ossification of spinal osteotomy combined with pedicle screw internal fixation for the treatment, control group using spinal wedge osteotomy combined with pedicle screw internal fixation for the treatment of bleeding, and deformity correction the extent of operation time, operation measure and comparison of two kinds of operation, and postoperative complications. Results In the observation group, the kyphotic angle of the thoracic vertebra was corrected from (37.4±10.0) ° to (1.8±0.5) °and then to (1.9±0.9) °, laparoscopic angle was corrected from (-13.7±17.3)° to (27.0±7.2) ° and then to (27.3±6.8) °, the sagittal plane balance was calculated from preoperative (35.8±10.6) ° to (12.7±4.2) ° andthen to (12.9±4.4) °, the maxillary angle was corrected from (63.5±11.1) ° to (12.8±3.1) °and then to (12.6±3.6)° at the second week and the third month, respectively, there was no significant difference compared with the control group (P= 0.077). While the sixth month after the end of follow-up, the difference was statistically significant (P=0.035); In the observation group, the fusion rate of bone graft was 100.0% higher than that of the control group (83.4%) (P=0.007). The observation group of spine function also had a significant difference in the follow-up period Higher than the control group (P=0.041). Conclusion The spine to cancellous ossification osteotomy used in ankylosing spondylitis kyphosis has good curative effect, can effectively restore the spinal height, prevent orthopedic excessive or loss, improve the fusion rate of bone graft, is worth the clinical promotion. Key words: To cancellous ossification; Osteotomy; Ankylosing spondylitis; Kyphosis
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