Clinical effect of posterior lumbar osteotomy on severe thoracolumbar kyphosis complicated with ankylosing spondylitis
YANG Yunfei1, HUANG Lijun1, XIA jiyuan2, XIA Qingfu1, ZHAO Guofeng1, TIAN Xinqi1, LIU Chang1
1. Department of Spinesurgery,Beijing Dawanglu Emergency Hospital, Beijing 100122,China; 2. Department of Clinical Medicine,Hebei Medical University, Shijiazhuang 050000, China
Abstract:Objective To evaluate the clinical efficacy of posterior lumbar osteotomy in the correction of severe thoracolumbar kyphosis complicated with ankylosing spondylitis(AS).Methods From October 2020 to June 2021, ten patients with thoracolumbar kyphosis complicated with AS and one patient complicated with Andersson lesion (AL) were treated, with an average age of 32.8±3.4 years; All patients had low back pain and kyphosis deformity. The preoperative thoracic kyphosis angle was 59.36°±12.63°, with lumbar lordosis angle of -0.54°±32.89° and chin eyebrow angle of 31.82°±12.25°. The above ten patients underwent pedicle subtraction osteotomy (PSO) in L2, and the only one patient was treated with posterior lumbar debridement and osteotomy. Comprehensive evaluation of postoperative imaging, clinical efficacy and complications were performed.Results The operation was successful and well tolerated. The average postoperative thoracic kyphosis angle was 55.18°±11.59°, with lumbar lordosis of 43.91°±19.14° and chin eyebrow angle of 1.82°±0.83°. All patients were followed up without vascular and nerve injury, stress fracture or other major complications.Conclusion PSO correction through L2 for severe kyphosis complicated with AS and the osteotomy in treating kyphosis combined with AL are safe and reliable.
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