中国组织工程研究与临床康复2011，Vol.15Issue(13)：2331-2334,4.DOI:10.3969/j.issn.1673-8225.2011.13.013
计算机辅助术前预测青少年特发性脊柱侧凸内置物的长度
Computer-assisted preoperative calculation of the orthopaedic rod length for patients with adolescent idiopathic scoliosis
周忠杰 1刘立岷 1宋跃明1
作者信息
- 1. 四川大学华西医院骨科,四川省成都市,610041
- 折叠
摘要
Abstract
BACKGROUND: Surgeons usually need to estimate the rod length according to the feature of the deformity and the length of the rod model made before the correction. But such estimation is not precise.OBJECTIVE: To calculate preoperatively the length of the rod for patients with adolescent idiopathic scoliosis (AIS) using computer and to evaluate the validity and accuracy of this method.METHODS: The spinal spiral CT of the patients with AIS was manipulated by the MIMICS software to reconstruct a three-dimensional model of all the vertebrae needing to be corrected. The vertebrae's positions were adjusted to mimic the orthopaedic result of the operation, and the length of the orthopaedic rod can be calculated using short straight line by the software's measuring tool. Seven patients were selected. The length of the orthopedic rod was calculated by MIMICS software and traditional method, anterior and posterior position X-ray of vertebral column were done postoperatively to measure the ideal length of the orthopaedic rod to evaluate the accuracy of the method.RESULTS AND CONCLUSION: For validity evaluation, the interobserver variability was (2.492±2.089) mm, and r=0.986,P=0.000 for the intra observer variability. The rod length measured by the software was (4.23±3.84) mm longer than the ideal length, while the length measured by the traditional method was (9.32±5.23) mm longer. The P value was 0.021, and the difference was statistically significant. The method of calculating preoperatively the length of the orthopaedic rod for patients with AIS using MIMICS software has good validity and reproducibility; this method also has good accuracy, which can be put into practical use.关键词
青少年特发性脊柱侧凸/三维重建/计算机辅助术/矫形棒长/术前测量分类
医药卫生引用本文复制引用
周忠杰,刘立岷,宋跃明..计算机辅助术前预测青少年特发性脊柱侧凸内置物的长度[J].中国组织工程研究与临床康复,2011,15(13):2331-2334,4.
