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Ji, J.G., Zhang, X., Qiu, G.X., Xing, Z.J., Wang, Y.P., Shen, J.Q., Zhao, Y. and Li, S.G. (2010) Selection of the Lowest Instrumented Vertebrae for Adolescent Idiopathic Scoliosis. Chinese Journal of Orthopaedics, 30, 321-324.

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• TITLE: Clinical Application and Exploration on Steps Progressively Corrections and Gradual Shortening Combined with Total Spinal Osteotomy for Angular Kyphosis—Basic Research and Clinical Application

  AUTHORS: Ming Lu, Xiaoping Wang, Dongyun Ren, Huasong Ma

  KEYWORDS: Angular Kyphosis, Total Spinal Osteotomy, Biomechanical Analysis, Clinical Outcome

  JOURNAL NAME: Surgical Science, Vol.7 No.1, January 28, 2016

  ABSTRACT: Introduction: This study is designed to explore the biomechanical principles of posterior bilateral pedicle screw on steps progressively and tight closure on every step for severe angular kyphosis and the indication conditions and clinical pathways of above new technique. Materials and Methods: A total of 90 patients have severe angular kyphosis, 37 males and 53 females, with an average age of 47 years. All patients were treated with posterior bilateral pedicle screw and step tight closure for gradual shortening and orthopedic technology. Results: Average intraoperative blood loss was 2089 ml. Average operation time was 326 minutes. Kyphotic angle changed from 90.1° averagely preoperatively to 41.6° averagely postoperatively with an improvement rate of 65%. The distance from C7 plumb line to posterior upper edge of the S1 vertebral body was averagely 5.2 mm postoperatively, with a correction rate of 73%. Neurological complications occurred in 2 cases, accounting for 6%. Non-neurological complications occurred in 2 cases, accounting for 6%. Anatomical parameters were significantly improved postoperatively (P