Modified Closing-Opening Wedge Osteotomy to Correct Kyphosis in Ankylosing Spondylitis.

Abstract

BACKGROUND The aim of this study was to analyze the clinical and radiological outcomes of modified closing-opening wedge osteotomy (mCOWO) for correcting kyphosis in ankylosing spondylitis (AS) patients. MATERIAL AND METHODS From April 2012 to April 2017, records of consecutive patients who underwent mCOWO were reviewed. The clinical and radiological outcomes were analyzed preoperatively, postoperatively, and at the most recent follow-up. RESULTS Eleven AS patients underwent mCOWO, with a mean follow-up of 19.4 months (range, 12-45 months). The average sagittal vertical axis (SVA) was corrected from 191.9 mm preoperatively to 75.9 mm postoperatively (P<0.05) and 78.9 mm at the most recent follow-up (P<0.05). The average correction angles at the osteotomy site were 44.5° postoperatively and 45.0° at the most recent follow-up (P>0.05). Sagittal translation (ST) occurred in 2 patients, and 5 mm was the maximum. There was no neurologic damage. Solid fusion was observed at the most recent follow-up in all patients. CONCLUSIONS Modified closing-opening wedge osteotomy (mCOWO) is an effective technique for correcting kyphosis in patients with AS.

• Authors: Chaoshuai Feng, Huiren Tao, Kai Yang, Jiawei Xu, Chunguang Duan, Weizhou Yang, Huan Li, Haopeng Li
• Journal: Medical science monitor : international medical journal of experimental and clinical research (Med Sci Monit) Vol. 25 Pg. 6532-6538 (Aug 31 2019) ISSN: 1643-3750 [Electronic] United States
• PMID: 31471964 (Publication Type: Journal Article, Retracted Publication)

Topics

• Adult
• Female
• Follow-Up Studies
• Humans
• Kyphosis (complications, diagnostic imaging, surgery)
• Male
• Middle Aged
• Osteotomy
• Postoperative Complications (etiology)
• Spondylitis, Ankylosing (complications, diagnostic imaging, surgery)
• Treatment Outcome