Evidence map›Paper›PMID 34863150›Full record

ArticleBMC musculoskeletal disorders2021

3D printed templates improve the accuracy and safety of pedicle screw placement in the treatment of pediatric congenital scoliosis.

Jun Cao, Xuejun Zhang, Haonan Liu, Ziming Yao, Yunsong Bai, Dong Guo, Lei Feng

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Clinical applications of 3D printing in spine surgery: a systematic review.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Pooled it
  2. Three-Dimensional Printing in Pediatric Orthopaedics: Cost Analysis and Emerging Applications.Journal of the Pediatric Orthopaedic Society of North America · 2026
    Review
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  12. 3D printing applications in spine surgery: an evidence-based assessment toward personalized patient care.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2022
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Jun CaoBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China.
Xuejun ZhangBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China. zhang-x-j04@163.com.ORCID https://orcid.org/0000-0003-2358-7564
Haonan LiuBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China.
Ziming YaoBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China.
Yunsong BaiBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China.
Dong GuoBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China.
Lei FengBeijing Children's Hospital, Capital Medical University, National Center for Children's Health, #56 Nan Li Shi Road, Xi Cheng District, Beijing, 100045, China.
Capital Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThree-dimensional (3-D) printed guidance templates are being increasingly used in spine surgery. The purpose of this study was to determine if 3D printed navigation templates can improve the accuracy of pedicle screw placement and decrease the complication rate compared to freehand screw placement in the treatment of children with congenital scoliosis.

methodsThe records of pediatric patients with congenital scoliosis treated at our hospital from January 2017 to January 2019 were retrospectively reviewed. Patients were divided into those where a 3D printed guidance templated was used and those in which the freehand method was used for pedicle screw placement. The accuracy rate of pedicle screw placement, surgical outcomes, and complications were compared between groups.

resultsA total of 67 children with congenital scoliosis were included (43 males and 24 females; mean age of 4.13 ± 2.66 years; range, 2-15 years). There were 34 children in the template-assisted group and 33 in the freehand group. The excellent accuracy rate of pedicle screw placement was significantly higher in the template-assisted group (96.10% vs. 88.64%, P = 0.007). The main Cobb angle and kyphosis angle were similar between the 2 groups preoperatively and postoperatively (all, P > 0.05), and in both groups both angles were significantly decreased after surgery as compared to the preoperative values (all, P < 0.001). The degree of change of the Cobb angle of the main curve and kyphosis angle were not significantly different between the 2 groups. There were no postoperative complications in the template group and 4 in the freehand group (0% vs. 12.12%; P = 0.009). All 4 patients with complications required revision surgery.

Indexed as

Pedicle ScrewsScoliosisChildChild, PreschoolFemaleHumansInfantMalePrinting, Three-DimensionalRetrospective StudiesTomography, X-Ray Computed3D printed templateComputer-assisted surgeryPediatric congenital scoliosisScrew placement

Identifiers

PMID34863150
PMCPMC8645104
OpenAlexW4226170835

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.