Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (30): 4900-4906.doi: 10.12307/2021.280

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Efficacy and safety of three-dimensional model assisted screw placement technique and traditional screw placement technique in the treatment of spinal deformity: a meta-analysis

Zhong Yuanming1, Wan tong2, Zhong Xifeng2, Wu Zhuotan2, He Bingkun2, Wu Sixian2   

  1. 1The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530001, Guangxi Zhuang Autonomous Region, China; 2Graduate School of Guangxi University of Chinese Medicine, Nanning 530001, Guangxi Zhuang Autonomous Region, China
  • Received:2020-06-08 Revised:2020-06-13 Accepted:2020-07-16 Online:2021-10-28 Published:2021-07-29
  • Contact: Zhong Yuanming, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530001, Guangxi Zhuang Autonomous Region, China
  • About author:Zhong Yuanming, Doctoral supervisor, Professor, Chief physician, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530001, Guangxi Zhuang Autonomous Region, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81760874 (to ZYM); the First-Class Discipline of Chinese Medicine in Guangxi, No. [2018]12 (to ZYM)

Abstract: OBJECTIVE: It remains disputed whether three-dimensional (3D) model assisted screw placement technique and traditional screw placement technique in the treatment of spinal deformity. Thus, this study systematically assessed the difference between 3D model assisted screw placement technique and traditional screw placement technique in the treatment of spinal deformity. 
METHODS: A computer-based online search of CNKI, Wanfang, VIP, The Cochrane library, PubMed, CBM, and EMBASE was performed to retrieve clinical studies of comparison between 3D model assisted screw placement technique and traditional screw placement technique in the treatment of spinal deformity published before April 2020. Moreover, related papers were manually retrieved. After two evaluators independently selected literature, extracted data and evaluated the quality of methodology included in the study, meta-analysis was carried out by using Stata/SE 12.0 software.
RESULTS:  (1) Eight clinical controlled trials were included, and the quality of a randomized controlled trial was grade B. NOS scores of all cohort studies were greater than 5. A total of 479 patients were included in the final analysis, and divided into model group (n=219) and traditional group (n=260). (2) The meta-analysis results showed that there were significant differences in Cobb angle (MD=-4.69, 95%CI:-8.05 to -1.32, P < 0.05), accuracy of pedicle screw placement (RR=1.11, 95%CI:1.08-1.14, P < 0.05), average screw placement time (MD=-1.52, 95%CI:-1.75 to -1.29, P < 0.05), operation time (MD=-28.59, 95%CI:-30.67 to -26.52, P < 0.05), intraoperative fluoroscopy times (MD=-3.11, 95%CI:-4.70 to -1.53, P < 0.05), and intraoperative blood loss (MD=-177.79, 95%CI:-250.08 to -105.50, P < 0.05) between the two methods. There was no significant difference in rate of complications (RR=0.94, 95%CI:0.75-1.17, P=0.576] between the two methods.  
CONCLUSION: Compared with the traditional screw placement technology, 3D model assisted screw placement technique has the advantages of good deformity correction, accurate and rapid screw placement, and less intraoperative blood loss. Given the limited quality of included studies, a large number of high-quality multicenter randomized controlled trials are needed to provide more evidence.

Key words: bone, spine, 3D printing, deformity, pedicle screw, screw, meta-analysis

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