Evidence map›Paper›PMID 27683707›Full record

ArticleJournal of spine surgery (Hong Kong)2016

Effects of cement augmentation on the mechanical stability of multilevel spine after vertebral compression fracture.

Eelin Tan, Tian Wang, Matthew H Pelletier, William R Walsh

Open access · hybridAbstract read
In one paragraph

Article in Journal of spine surgery (Hong Kong), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 23% 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

6 citing papers in PubMed, 11 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

4 authors at 2 institutions in 1 country.

Eelin TanUniversity of New South Wales, Sydney, NSW 2052, Australia ;
Tian WangSurgical and Orthopaedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales, Level 1, Clinical Sciences Building, Gate 6, Randwick, Sydney, NSW 2031, Australia.
Matthew H PelletierSurgical and Orthopaedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales, Level 1, Clinical Sciences Building, Gate 6, Randwick, Sydney, NSW 2031, Australia.
William R WalshSurgical and Orthopaedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales, Level 1, Clinical Sciences Building, Gate 6, Randwick, Sydney, NSW 2031, Australia.
Neuroscience Research Australia · AUUNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies on the effects of cement augmentation or vertebroplasty on multi-level spine after vertebral compression fractures are lacking. This paper seeks to establish a 3-vertebrae ovine model to determine the impact of compression fracture on spine biomechanics, and to discover if cement augmentation can restore mechanical stability to fractured spine.

methodsFive lumbar spine segments (L1-L3) were obtained from 5-year-old female Merino sheep. Standardized wedge-compression fractures were generated in each L2 vertebra, and then augmented with polymethyl methacrylate (PMMA) cement mixed with 30% barium sulphate powder. Biomechanical pure moment testing in axial rotation (AR), flexion/extension (FE) and lateral bending (LB) was carried out in the intact, fractured and repaired states. Range of motion (ROM) and neutral zone (NZ) parameters were compared, and plain radiographs taken at every stage.

resultsExcept for a significant increase in ROM between the intact and fractured states in AR between L1 and L2 (P<0.05), there were no other significant differences in ROM or NZ between the other groups. There was a trend towards an increase in ROM and NZ in all directions after fracture, but this did not reach significance. Normal biomechanics was only minimally restored after augmentation.

conclusionsResults suggest that cement augmentation could not restore mechanical stability of fractured spine. Model-specific factors may have had a role in these findings. Caution should be exercised when applying these results to humans.

Indexed as

articular range of motion (ROM)Compression fracturespolymethyl methacrylatespinevertebroplasty

Identifiers

PMID27683707
PMCPMC5039855
OpenAlexW2470880530

What OpenQuestion holds

Textmetadata
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.