Evidence map›Paper›PMID 35284285›Full record

ArticleQuantitative imaging in medicine and surgery2022

Analysis of intervertebral disc degeneration in patients with ossification of the posterior longitudinal ligament.

Xi Luo, Kaiqiang Sun, Jian Zhu, Shunmin Wang, Yuan Wang, Jingchuan Sun, Jiangang Shi

Open access · diamondAbstract read
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Article in Quantitative imaging in medicine and surgery, 2022. 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
0.8field-weighted citation impact, top 29% 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. [Radiological characteristics and associated factors of single-level cervical disc herniation combining with focal ossification of posterior longitudinal ligament].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026
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  2. Article
  3. Prevalence and distribution of cervical facet joint degeneration in patients with cervical spondylotic myelopathy without/with instability and ossification of the posterior longitudinal ligament-a comparative study.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 · 2025
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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.

Xi Luo *Department of Orthopedics, Changzheng Hospital, The Second Military Medical University, Shanghai, China.
Kaiqiang Sun *Department of Orthopedics, Changzheng Hospital, The Second Military Medical University, Shanghai, China.
Jian Zhu *Department of Orthopedics, Changzheng Hospital, The Second Military Medical University, Shanghai, China.
Shunmin Wang *Department of Orthopedics, 910 Hospital, Quanzhou, China.
Yuan WangDepartment of Orthopedics, Changzheng Hospital, The Second Military Medical University, Shanghai, China.
Jingchuan SunDepartment of Orthopedics, Changzheng Hospital, The Second Military Medical University, Shanghai, China.
Jiangang ShiDepartment of Orthopedics, Changzheng Hospital, The Second Military Medical University, Shanghai, China.
Second Military Medical University · CNThe 180th Hospital of PLA · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: As degenerative disease with nerve compression, little is known about the relationship between cervical ossification of the posterior longitudinal ligament (OPLL) and intervertebral disc degeneration (IVDD). This study investigates the effect of ossification of ligaments on IVDD in patients with cervical OPLL. We focus on the ossification-related segment in patients diagnosed with OPLL, which is characterized by ossification that crosses intervertebral space or occurs concurrently in the upper and lower vertebrae. Methods: A total of 92 ossification-related segments from 40 patients were involved in the study. X-ray, computed tomography (CT), and magnetic resonance imaging (MRI) were used to evaluate the ossification thickness, disc height, cervical range of motion (ROM) of the segment, Kang's grade, and disc signal loss. We conducted correlation analysis and subgroup comparisons to analyze the type of ossification, ossification thickness, disc height, disc signal loss, ROM and Kang's grade. Results: The specific ossification thickness was negatively correlated with the disc signal loss (P<0.05). Specific ossification thickness and specific disc height were positively correlated (P<0.05). Segments were divided into the nude group (ossification not crossing the intervertebral space) and the covered group (ossification crossing the intervertebral space). The nude group presented smaller ossification thickness and disc height, and a higher grade of disc signal loss and ROM (P<0.05). Conclusions: The formation of OPLL may be interrelated with the alleviation of IVDD at the same segment. Furthermore, IVDD is not only related to the limited ROM caused by ossification, but also the size and shape of the ossified mass. A negative correlation exists between the ossification thickness and the severity of IVDD in OPLL patients. Ossification that crosses the interverbal space is associated with lower ROM, a thicker ossified mass, and better disc signal. For patients with nude ossification-related segments, a fusion surgery to restore intervertebral stabilization deserves serious consideration.

Indexed as

correlation analysisdegeneration of intervertebral discOssification of posterior longitudinal ligament (OPLL)

Identifiers

PMID35284285
PMCPMC8899972
OpenAlexW4206734128

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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.