Application of self-designed adjustable operation frame in treatment of severe kyphosis secondary to ankylosing spondylitis with posterior osteotomy

• Published in: Zhongguo xiu fu chong jian wai ke za zhi Vol. 34; no. 10; p. 1269
• Main Authors: Zhang, Wei, Yu, Haiyang, Wang, Hongliang, Zhai, Yunlei, Dong, Lei, Zheng, Guohui, Xu, Wenqiang, Zhang, Xu
• Format: Journal Article
• Language: Chinese
• Published: China 15.10.2020
• Subjects: Adult; Female; Humans; Kyphosis - etiology; Kyphosis - surgery; Lumbar Vertebrae - surgery; Male; Middle Aged; Osteotomy; Spondylitis, Ankylosing - complications; Spondylitis, Ankylosing - surgery; Treatment Outcome; kyphosis; posterior osteotomy; Self-designed adjustable operation frame; ankylosing spondylitis
• ISSN: 1002-1892
• DOI: 10.7507/1002-1892.202003115

To introduce a self-designed adjustable operation frame and explore the feasibility and safety in the treatment of severe kyphosis secondary to ankylosing spondylitis with posterior osteotomy. Between March 2016 and May 2018, 7 cases of severe kyphosis secondary to ankylosing spondylitis were treated with posterior osteotomy using self-designed adjustable operation frame with prone position. There were 5 males and 2 females with an average age of 49.4 years (range, 40-55 years). The disease duration was 10-21 years (mean, 16.7 years). The apical vertebrae of kyphosis were located at T in 2 cases, T in 1 case, L in 1 case, and L in 3 cases. Among the 7 cases, 2 were classified as typeⅠ, 4 as type ⅡB, and 1 as type ⅢA according to 301 classification system. There was no neurological deficit of all cases; but 1 case suffered bilateral hip joints ankylosed in non-functional position. The parameters of chin-brow vertical angle (CBVA), global kyphosis (GK), thoracolumbar kyphosis (TLK), lumbar lordosis (LL), sagitt