Evidence map›Paper›PMID 32194891›Full record

ArticleAmerican journal of translational research2020

Biomechanical effects of direction-changeable cage positions on lumbar spine: a finite element study.

Haiping Zhang, Dingjun Hao, Honghui Sun, Sinmin He, Biao Wang, Huimin Hu, Yongyuan Zhang

Open access · greenAbstract read
In one paragraph

Article in American journal of translational research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 25% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  5. 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 2 institutions in 1 country.

Haiping ZhangDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Dingjun HaoDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Honghui SunDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Sinmin HeDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Biao WangDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Huimin HuDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Yongyuan ZhangDepartment of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University Health Science Center Xi'an, Shaanxi, China.
Xi'an Jiaotong University · CNXi'an Honghui Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This finite element (FE) study of lumbar biomechanics aims to predict how the parameters like range of motion (ROM), intervertebral disc pressure (IDP), cage stress and screw stress are affected by different direction-changeable cage positions. Firstly, the three-dimensional FE model of L3-L5 segment was developed, and the model was adjusted to adapt different direction-changeable cage positions at the L4-L5 level though transforaminal lumbar interbody fusion (TLIF) with pedicle screws. The effects of Type A (the lateral region), Type B (the lateralcentral region) and Type C (the anteriocentral region) on ROM, IDP, cage stress and screw stress were examined. The results showed that after implantation of interbody cages at different positions, the ROM at surgical level L4-L5 decreased substantially in all motion modes. The maximal stress in cage decreased with Type A, B and C in all motion modes except flexion and extension. The maximal cage stress was observed in Type A with 720.5 MPa in left rotation, in Type B with 707 MPa in flexion, in Type C with 397.3 MPa in left rotation, respectively. The maximal IDP was similar in three types, with 1.6 MPa in left lateral bending in Type A, 1.5 MPa in flexion in Type B, and 1.4 MPa in flexion in Type C. The range of screw peak stress was 16.4 to 61.1 MPa in Type A, 15.9 to 50.9 MPa in Type B, and 14.6 to 46.1 MPa Type C. In conclusion, comparing the cages with different positions, anteriocentral position cage has more advantages like lower cage stress, ODL and screw stress.

Indexed as

biomechanicsDirection-changeable cagefinite elementTLIF

Identifiers

PMID32194891
PMCPMC7061850
OpenAlexW3012881832

What OpenQuestion holds

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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.