Evidence map›Paper›PMID 37132375›Full record

ArticleGlobal spine journal2024

Biomechanical Analysis of Lumbar Interbody Fusion Cages With Various Elastic Moduli in Osteoporotic and Non-osteoporotic Lumbar Spine: A Finite Element Analysis.

Da Zou, Lihao Yue, Zheyu Fan, Yi Zhao, Huijie Leng, Zhuoran Sun, Weishi Li

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Global spine journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05981222 (Biomechanical-matched Titanium Cages), which is not on this map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.6field-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.

NCT05981222 enrolling by invitationnot on this map

Biomechanical-matched Titanium Cages(Osteo Match) Versus PEEK Cages in Osteoporotic Lumbar Spine: a Multicenter, Prospective Cohort Study

TypeobservationalSponsorPeking University Third HospitalRan2023 to 2027Enrolled1,500ConditionsOsteoporosis, Degenerative Lumbar Disease, Degeneration Spine
3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 10 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

7 authors at 2 institutions in 1 country.

Da ZouOrthopaedics Department, Peking University Third Hospital, China.
Lihao YueOrthopaedics Department, Peking University Health Science Center, China.
Zheyu FanOrthopaedics Department, Peking University Health Science Center, China.
Yi ZhaoOrthopaedics Department, Peking University Health Science Center, China.ORCID 0000-0002-3460-5425
Huijie LengOrthopaedics Department, Peking University Third Hospital, China.
Zhuoran SunOrthopaedics Department, Peking University Third Hospital, China.
Weishi LiOrthopaedics Department, Peking University Third Hospital, China.ORCID 0000-0001-9512-5436
Ministry of Education of the People's Republic of China · CNPeking University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designFinite element analysis (FEA).

objectiveThis study aimed to explore the effects of cage elastic modulus (Cage-E) on the endplate stress in different bone conditions: osteoporosis (OP) and non-osteoporosis (non-OP). We also explored the correlation between endplate thickness and endplate stress.

methodsThe FEA models of L4-L5 with lumbar interbody fusion were designed to access the effects of Cage-E on the endplate stress in different bone conditions. Two groups of the Young's moduli of bony structure were assigned to simulate the conditions of OP and non-OP, and the bony endplates were analyzed in 2 kinds of thicknesses: .5 mm and 1.0 mm, with the insertion of cages with different Young's moduli including .5, 1.5, 3, 5, 10, and 20 GPa. After model validation, an axial compressive load of 400 N and a flexion/extension moment of 7.5Nm was performed on the superior surface of L4 vertebral body in order to analyze the distribution of stress.

resultsThe maximum Von Mises stress in the endplates increased by up to 100% in the OP model compared with non-OP model under the same condition of cage-E and endplate thickness. In both OP and non-OP models, the maximum endplate stress decreased as the cage-E decreased, but the maximum stress in the lumbar posterior fixation increased as the cage-E decreased. Thinner endplate thickness was associated with increased endplate stress.

conclusionThe endplate stress is higher in osteoporotic bone than non-osteoporotic bone, which explains part of the mechanism of OP-related cage subsidence. It is reasonable to reduce the endplate stress by reducing the cage-E, but we should balance the risk of fixation failure. Endplate thickness is also important when evaluating the cage subsidence risk.

Indexed as

cageelastic modulusendplatefinite element analysisosteoporosis

Identifiers

PMID37132375
PMCPMC11418684
OpenAlexW4367834249

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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.