Evidence map›Paper›PMID 40824406›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2025

A TACAF-based classification system for thoracic posterior longitudinal ligament ossification.

Shunmin Wang, Yangzi Yang, Tiefeng Li, Ximing Xu, Yuan Wang, Jiuyi Sun, Jiangang Shi

Abstract readValidation Study
PubMed Publisher
In one paragraph

Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Shunmin Wang *Ethics Committee of Changzheng Hospital, Shanghai, China.
Yangzi Yang *Ethics Committee of Changzheng Hospital, Shanghai, China.
Tiefeng Li *Ethics Committee of Changzheng Hospital, Shanghai, China.
Ximing XuEthics Committee of Changzheng Hospital, Shanghai, China.
Yuan WangEthics Committee of Changzheng Hospital, Shanghai, China. 1508764844@qq.com.
Jiuyi SunDepartment of Orthopedics, Naval Medical Center of PLA, Shanghai, China. Sunjiuyi@smmu.edu.cn.
Jiangang ShiEthics Committee of Changzheng Hospital, Shanghai, China. changzhengspine@126.com.

Funding

Major Special Project of ThreeYear Action Plan to Promote Clinical Skills and Clinical Innovation Ability of Municipal Hospitals, Shanghai Hospital Development Centre Major Special Project of ThreeYear Action Plan to Promote Clinical Skills and Clinical Innovation Ability of Municipal Hospitals, Shanghai Hospital Development Centre
6 · The paper itself

Abstract

BACKGROUND AND

objectivesTo evaluate the reliability and clinical applicability of a novel classification system for thoracic posterior longitudinal ligament ossification (OPLL) and its utility in guiding surgical approach selection for anterior controllable ante-displacement fusion (TACAF).

methodsBased on anatomical and clinical characteristics, thoracic OPLL was classified according to: Grades 1-4 (severity), Zones A-B (location), and Arc morphology (kyphotic curvature). Twenty surgeons independently assessed 50 cases to evaluate system reliability. Fleiss kappa coefficients determined inter- and intra-observer agreement. Clinical validation utilized demographic and perioperative data from 50 patients, including: Neurological function (11-point JOA scale), operative time, blood loss, and major complications.

resultsFor grade 3/4 or zone A OPLL, anterior approaches were predominantly preferred. Grade 2 or zone B lesions permitted selective ossification resection. Laminectomy was contraindicated for grade 4 OPLL. Lesions nearer the arc vertex consistently required anterior approaches. All cases managed per recommended protocols demonstrated uniformly excellent JOA score improvement rates across grades/zones, without statistically significant differences.

conclusionThis novel classification system provides reliable and reproducible standardization for thoracic OPLL, effectively guiding surgical decision-making. Clinical outcomes and complication analyses in 50 patients support its validity for selecting thoracic OPLL decompression methods.

Indexed as

Decompression, SurgicalKyphosisOssification of Posterior Longitudinal LigamentPostoperative ComplicationsThoracic VertebraeAgedBlood Loss, SurgicalContraindications, ProcedureCross-Sectional StudiesFemaleHumansLaminectomyLongitudinal LigamentsMaleMiddle AgedOperative TimeClassification surgeryThoracic myelopathyThoracic OPLL

Identifiers

PMID40824406

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.