Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (32): 5158-5163.doi: 10.3969/j.issn.2095-4344.1982

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Application of three-dimensional digital operation planning to individualized adolescent idiopathic scoliosis surgery

Fu Yu1, Zhang Yunfeng2, Su Baoke3, Zhao Yan1, Xin Daqi1, Wang Haiyan3, Xu Yangyang3, Zhang Cong4, Wang Yidan3, Wang Xing3, Gao Shang3, En He3, Cai Yongqiang3, Wang Jianzhong3, Wang Zhiqiang3, Gao Mingjie 3, Li Zhijun3, Ma Jierong3, Li Xiaohe3
  


  • Online:2019-11-18 Published:2019-11-18
  • Contact: Li Xiaohe, MD, Professor, Master’s supervisor, Department of Human Anatomy, Basic Medical School, Inner Mongolia Medical University, Huhhot 010010, Inner Mongolia Autonomous Region, China Li Zhijun, Master, Professor, Master’s supervisor, Department of Human Anatomy, Basic Medical School, Inner Mongolia Medical University, Huhhot 010010, Inner Mongolia Autonomous Region, China
  • About author:Fu Yu, MD, Chief physician, Department of Spine, the Second Affiliated Hospital of Inner Mongolia Medical University, Huhhot 010010, Inner Mongolia Autonomous Region, China Zhang Yunfeng, Master, Associate chief physician, Department of CT Center, the Second Affiliated Hospital of Inner Mongolia Medical University, Huhhot 010010, Inner Mongolia Autonomous Region, China Fu Yu and Zhang Yunfeng contributed equally to this work.
  • Supported by:

    the National Natural Science Foundation of China, No. 81560348, 81260269, 81550042 (to LZJ), No. 81460330 (to LXH)| the Youth Elite of Science and technology of Inner Mongolia Autonomous Region Colleges and Universities “Young Science and Technology Talents Program”, No. NJYT-15-B05 (to LXH)| the Inner Mongolia Autonomous Region Science and Technology Plan Project (2016) (to LXH)| the Natural Science Foundation of Inner Mongolia Autonomous Region, No. 2016MS08131 (to LXH)| the Science and Technology Innovation Leading Project of Inner Mongolia Autonomous Region (2017) (to LXH)| the Fund for Returnees from the Department of Human Resources and Social Security of Inner Mongolia Autonomous Region (to LXH)

Abstract:

BACKGROUND: Adolescent idiopathic scoliosis is the most common form of scoliosis. Spinal anatomical changes caused by malformation make the risk of clinical screw fixation high.
OBJECTIVE: To investigate the method to establish a digital virtual surgery planning system for adolescent idiopathic scoliosis.
METHODS: One 17-year-old patient with adolescent idiopathic scoliosis was selected and underwent 16-slice spiral CT scan in Department of Spine, the Second Affiliated Hospital of Inner Mongolia Medical University. Three-dimensional reconstruction of CT data was conducted using Mimics 16.0 software. Navigation template design and three-dimensional printing were performed after measuring the diameter, length of transpedicular screw and angle after fixation. Surgical screw fixation was performed with navigation template, and the effect of screw placement was evaluated after CT scan.
RESULTS AND CONCLUSION: Three-dimensional reconstruction was conducted in the patient’s spine. Navigation templates were designed using software reverse engineering design function to prevent the screw from penetrating the anterior cortex of the vertebral body and the inner and outer cortical bone of the pedicle. Three-dimensional printing of deformity of navigation template was conducted and it was used in spinal orthopedic surgery. Postoperative evaluation showed that no screw penetrated the cortex and the accuracy of screw placement was 100%. The results showed that the successful rate of screw placement was high for patients with idiopathic scoliosis by using three-dimensional digital reconstruction design navigation template. The patient and her family member signed the informed consent. This study was approved by the Ethics Committee of Inner Mongolia Medical University in April 2014 (approval No. 20140408).  

Key words: adolescent idiopathic scoliosis, pedicle fixation, pedicle, digital three-dimensional reconstruction, navigation template, 3D printing

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