Evidence map›Paper›PMID 28651616›Full record

ArticleJournal of orthopaedic surgery and research2017

The influence of L4-S1 Dynesys® dynamic stabilization versus fusion on lumbar motion and its relationship with lumbar degeneration: a retrospective study.

Chengmin Zhang, Liyuan Wang, Tianyong Hou, Lei Luo, Chen Zhao, Yibo Gan, Qiang Zhou, Pei Li

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2017. 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
1.3field-weighted citation impact, top 21% 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, 30 citations in OpenAlex.

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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

8 authors at 2 institutions in 1 country.

Chengmin ZhangDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China.
Liyuan WangDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China.
Tianyong HouDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China.
Lei LuoDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China.
Chen ZhaoDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China.
Yibo GanDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China.
Qiang ZhouDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China. zq_tlh@163.com.
Pei LiDepartment of Orthopedics, Southwest Hospital, Third Military Medical University, No. 29 GaoTanYan Street, Chongqing, 400038, China. lipeizrj@163.com.
Southwest Hospital · CNArmy Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this study is to evaluate the efficacy of Dynesys® posterior dynamic stabilization (PDS) in the treatment of L4-S1 degenerative diseases and to assess the influence of postoperative motion on lumbar degeneration.

methodsIncluded in this retrospective study were patients with L4-S1 degenerative disease who underwent fusion or PDS from September 2010 to September 2014. Clinical outcomes were assessed by preoperative and postoperative visual analog scale (VAS) and Oswestry Disability Index (ODI). Preoperative and postoperative X-rays assessed range of motion (ROM) of the non-surgical and surgical levels and whole lumbar. MRI assessed degeneration of non-surgical levels.

resultsA total of 56 consecutive patients were divided into two groups: group A, PDS, and group B, fusion. Patient demographics and baseline characteristics were similar in the two groups. In both groups, there was a significant difference between preoperative and postoperative VAS and ODI scores (P < 0.05). However, there was a significant difference in a 6-month follow-up ODI between the two groups (P < 0.05). X-rays showed PDS patients partially maintained surgical level ROM and non-surgical level ROM increased less than in the fusion group. MRI showed adjacent segment degeneration (ASD) in both groups, and patients whose preoperative L3-4 Pfirrmann classification was higher than grade 2 had more ASD than lower than grade 2.

conclusionPDS can maintain surgical level ROM and had less influence on whole and non-surgical level ROM. Following PDS, patients recovered faster and had a better lumbar function. It may be a better choice for multi-level lumbar degenerative diseases.

Indexed as

FemaleHumansIntervertebral Disc DegenerationLumbar VertebraeMaleMiddle AgedOrthopedic ProceduresRange of Motion, ArticularRetrospective StudiesSpinal FusionAdjacent segment degenerationL4–S1Lumbar degenerative diseasesPosterior dynamic stabilizationRange of motion

Identifiers

PMID28651616
PMCPMC5485709
OpenAlexW2683465218

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LicenceCC BY
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Registered trials

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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.