Evidence map›Paper›PMID 29214370›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2018

Lumbar intervertebral disc allograft transplantation: the revascularisation pattern.

Yong-Can Huang, Jun Xiao, Victor Y Leung, William W Lu, Yong Hu, Keith D K Luk

Abstract read
PubMed Publisher
In one paragraph

Article in 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, 2018. 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
0.6field-weighted citation impact, top 31% 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, 11 citations in OpenAlex.

  1. Article
  2. Review
  3. Comparative study of outcomes between allograft intervertebral disc transplantation and anterior cervical discectomy and fusion: a retrospective cohort study at least 5 years of follow-up.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 · 2023
    Article
  4. Article
  5. Article
  6. Article
  7. The Michel Benoist and Robert Mulholland yearly European Spine Journal review: a survey of the "surgical and research" articles in the European Spine Journal, 2018.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 · 2019
    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

6 authors at 2 institutions in 2 countries.

Yong-Can HuangDepartment of Orthopaedics and Traumatology, The University of Hong Kong, 5/F Professor Block, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China.
Jun XiaoDepartment of Joint Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Victor Y LeungDepartment of Orthopaedics and Traumatology, The University of Hong Kong, 5/F Professor Block, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China.
William W LuDepartment of Orthopaedics and Traumatology, The University of Hong Kong, 5/F Professor Block, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China.
Yong HuDepartment of Orthopaedics and Traumatology, The University of Hong Kong, 5/F Professor Block, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China.
Keith D K LukDepartment of Orthopaedics and Traumatology, The University of Hong Kong, 5/F Professor Block, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China. hrmoldk@hku.hk.
University of Hong Kong · HKSouthern Medical University · CN

Funding

National Natural Science Foundation of China 81702171Research Grants Council of Hong Kong 773112
6 · The paper itself

Abstract

purposeFresh frozen intervertebral disc allograft transplantation has been reported to be a viable treatment option for advanced degenerative disc diseases, but rapid degeneration of the postoperative allograft was found. Loss of nutrient supply is believed to be the most likely inducer because the disc allografts have to endure in an ischaemic environment until the nutrient pathway is re-established. The aim of this study was to focus on the revascularisation of the disc allograft after transplantation in goats.

methodsTwenty male goats were used in this study. Intervertebral disc allograft transplantation was performed at L4/L5. Groups of five goats were killed at 1.5, 6 and 12 m postoperatively, respectively. The transplanted segments were harvested, fixed, sagittally cut and decalcified for H&E staining and immunochemistry to observe the blood vessel formation at the endplates, anterior outer annulus, posterior outer annulus, inner annulus and the nucleus. The blood vessel density and the sectional vessel area were measured.

resultsBlood vessels were first found in the marrow space of the bony endplate and the outer annulus at 1.5 month postoperatively. Then, they were able to penetrate to reach the cartilaginous endplate and the inner annulus after 6 months. Interestingly, the endplate area possessed the most abundant blood vessels, with the highest level of vessel density and area at the final follow-up. None of these newly formed vessels invaded the nucleus during the observation period.

conclusionsRevascularisation of the postoperative disc allograft has been determined, but its pattern was different from that in adult normal discs, suggesting that the typical nutrient diffusion pattern may be affected after transplantation.

Indexed as

Neovascularization, PhysiologicAllograftsAnimalsGoatsIntervertebral DiscIntervertebral Disc DegenerationLumbar VertebraeModels, AnimalAllograftBlood vesselsIntervertebral discRevascularisationTransplantation

Identifiers

PMID29214370
OpenAlexW2775121088

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.