tailieunhanh - báo cáo hóa học:" Unilateral pedicle screws asymmetric tethering: an innovative method to create idiopathic deformity"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Unilateral pedicle screws asymmetric tethering: an innovative method to create idiopathic deformity | Journal of Orthopaedic Surgery and Research BioMed Central Research article Unilateral pedicle screws asymmetric tethering an innovative method to create idiopathic deformity Yonggang Zhang Yan Wang Guoquan Zheng Xuesong Zhang Ruyi Zhang and Wei Zhang Open Access Address Department of Orthopaedics General Hospital of Chinese PLA Beijing 100853 China Email Yonggang Zhang - zhangyg301@ Yan Wang - yanwang301@ Guoquan Zheng - zgq951@ Xuesong Zhang - zhangxuesong301@ Ruyi Zhang - zhaxidele301@ Wei Zhang - bszw_1027@ Corresponding author Published 31 October 2007 Received 5 August 2007 Journal of Orthopaedic Surgery and Research 2007 2 18 doi l749-799X-2-l 8 Accepted 31 October 2007 This article is available from http content 2 l 18 2007 Zhang et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Objective To evaluate the feasibility of the method that unilateral pedicle screws asymmetric tethering in concave side in combination with convex rib resection for creating idiopathic deformity. Summary of background data Various methods are performed to create idiopathic deformity. Among these methods posterior asmmetric tethering of the spine shows satisfying result but some drawbacks related to the current posterior asymmetric tether were still evident. Materials and methods Unilateral pedicle screws asymmetric tethering was performed to l4 female goats age 5-8 week-old weight 6-8 kg in concave side in combination with convex rib resection. Dorsoventral and lateral plain radiographs were taken of each thoracic spine in the frontal and sagittal .