Evidence map›Paper›PMID 34881509›Full record

ArticleOrthopaedic surgery2022

Retrospective Comparative Study of Pedicle Screw Fixation via Quadrant Retractor and Buck's Technique in the Treatment of Adolescent Spondylolysis.

Yueyang Li, Haiyin Li, Xian Chang, Zhilei Hu, Xuesong Mu, Chenhao Liu, Xiaoxin Gao, Yuyao Zhang, Yue Zhou, Changqing Li

Open access · goldAbstract readComparative Study
In one paragraph

Article in Orthopaedic surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

7 citing papers in PubMed, 9 citations in OpenAlex.

  1. Pedicle screw vs. pedicle screw-rod-hook direct repair for adolescent lumbar spondylolysis: a multicenter retrospective cohort study.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 · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
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

10 authors at 1 institution in 1 country.

Yueyang LiDepartment of Orthopedics, Army Medical University, Chongqing, China.
Haiyin LiDepartment of Orthopedics, Army Medical University, Chongqing, China.
Xian ChangDepartment of Orthopedics, Army Medical University, Chongqing, China.
Zhilei HuDepartment of Orthopedics, Army Medical University, Chongqing, China.
Xuesong MuDepartment of Orthopedics, Army Medical University, Chongqing, China.
Chenhao LiuDepartment of Orthopedics, Army Medical University, Chongqing, China.
Xiaoxin GaoDepartment of Orthopedics, Army Medical University, Chongqing, China.
Yuyao ZhangDepartment of Orthopedics, Army Medical University, Chongqing, China.
Yue ZhouDepartment of Orthopedics, Army Medical University, Chongqing, China.
Changqing LiDepartment of Orthopedics, Army Medical University, Chongqing, China.ORCID https://orcid.org/0000-0002-0278-0798
Army Medical University · CN

Funding

National Natural Science Foundation of China 81572208
6 · The paper itself

Abstract

objectiveTo compare the effectiveness and practicality of pedicle screw fixation via the Quadrant retractor and Buck's technique in the treatment of adolescent spondylolysis.

methodsA total of 31 patients who underwent pedicle screw fixation or Buck's technique at our hospital from 2012 to 2017 were selected for this retrospective study. The patients were divided into a pedicle screw group (16 patients) and a Buck's technique group (15 patients) according to surgical procedure. Age, sex, disease duration, involved segments, preoperative Oswestry disability index (ODI) scores, visual analogue scale (VAS) scores for low back pain (LBP), intraoperative blood loss, incision length, operative time and length of hospital stay were documented. ODI scores, VAS scores for LBP and fusion rates at 1 month, 6 months, 1 year and 3 years postoperatively were used to evaluate surgical outcomes.

resultsThe average follow-up period was 32.75 ± 11.99 months in the pedicle screw group and 31.02 ± 9.64 months in the Buck's technique group. No significant differences in demographic data and perioperative data were found between the two groups (P > 0.05). The ODI scores and VAS scores for LBP in both groups were significantly improved at 3 years postoperatively compared with the values before surgery (ODI%: 45.74 ± 2.47 vs 10.99 ± 3.00; 45.29 ± 6.94 vs 15.73 ± 6.89. VAS: 5.94 ± 0.68 vs 1.50 ± 0.52; 6.13 ± 0.74 vs 2.13 ± 0.92, P < 0.05). The ODI scores of the patients in the pedicle screw group at 1 month to 3 years postoperatively were lower than those of the patients in the Buck's technique group (P < 0.05). Moreover, the VAS scores for LBP of the patients in the pedicle screw group at 6 months and 3 years postoperatively were lower than those of the patients in the Buck's technique group (P < 0.05). No significant difference in the VAS scores for LBP was found between the two groups at 1 month postoperatively (3.88 ± 0.50 vs 4.20 ± 0.56, P = 0.10). Three years postoperatively, good fusion of the pars interarticularis was achieved in all patients in the pedicle screw group, but four patients in the Buck's technique group did not achieve good fusion (P = 0.02).

conclusionBoth pedicle screw fixation and Buck's technique can achieve good outcomes in the treatment of adolescent spondylolysis. Pedicle screw fixation via the Quadrant retractor for the treatment of spondylolysis is associated with more satisfactory effects in terms of LBP relief and fusion results.

Indexed as

Pedicle ScrewsAdolescentDisability EvaluationFemaleHumansLumbar VertebraeMalePain MeasurementRetrospective StudiesSpinal FusionSpondylolysisAdolescentBuck's techniquePedicle screw systemSpondylolysis

Identifiers

PMID34881509
PMCPMC8755885
OpenAlexW4200034432

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.