Evidence map›Paper›PMID 40293469›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 Society2025

A new predictive factor for postoperative neurological deficits in patients with severe post-tuberculous kyphosis: the deformity angular distance ratio.

Jiajun Ni, Shi Yan, Yangxiao Li, Zhongqiang Chen, Yan Zeng

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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, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Predictive value of deformity angular ratio (DAR) for intraoperative neuromonitoring (IONM) signal loss and neurological complications in spinal deformity surgery: a systematic review and meta-analysis.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 · 2026
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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

5 authors.

Jiajun NiDepartment of Orthopedics, Peking University Third Hospital, Beijing, 100191, China.
Shi YanDepartment of Orthopedics, Peking University Third Hospital, Beijing, 100191, China.
Yangxiao LiDepartment of Orthopedics, Peking University Third Hospital, Beijing, 100191, China.
Zhongqiang ChenDepartment of Orthopedics, Peking University Third Hospital, Beijing, 100191, China.
Yan ZengDepartment of Orthopedics, Peking University Third Hospital, Beijing, 100191, China. zy7311@sohu.com.

Funding

National Natural Science Foundation of China 82272540
6 · The paper itself

Abstract

purposeTo investigate the effectiveness of sagittal deformity angular distance ratio (S-DADR; sagittal Cobb angle divided by the distance, in centimeters, between the midpoint of the upper endplate of the upper end vertebrae and the midpoint of the lower endplate of the lower end vertebrae) in evaluating neurological risks in patients with post-tuberculous kyphosis (PTK).

methodsA consecutive series of 102 patients with PTK who underwent corrective surgery between September 2010 and June 2024 were included. Measurements derived from preoperative radiographs were utilized to compute S-DADR. Potential risk factors of postoperative neurological deficits (PNDs) were assessed through univariate and multivariate analyses. Binary logistic regression was used to model the relationship between identified independent risk factors and PNDs, and the model was evaluated by the area under receiver operating characteristic curve (AUC).

resultsThe mean age of the 102 patients was 49.5 ± 12.1 years, and the incidence of PNDs was 22.5%. Univariate logistic regression revealed a positive correlation between the incidence of PNDs and S-DADR (OR = 1.103, P = 0.003), preoperative sagittal Cobb angle (OR = 1.025, P = 0.007), number of vertebrae resected (OR = 1.661, P = 0.024), operative time (OR = 1.005, P = 0.048) and total instrumented vertebrae (OR = 1.391, P = 0.014). Multivariate logistic regression identified S-DADR (OR = 1.091, P = 0.025) as an independent factor of PNDs. Patients with S-DADR ≥ 21.4 exhibited a 30% incidence of PNDs, which increased to 50% with an S-DADR of 30.0. The overall predictive performance of S-DADR (AUC = 0.720) for PNDs was deemed satisfactory.

conclusionsS-DADR can be used to quantify the severity of the deformity in patients with PTK, which is an independent risk factor for PNDs during corrective surgery. Patients with S-DADR ≥ 21.4 face a 30% incidence of developing PNDs after corrective surgery.

Indexed as

KyphosisNervous System DiseasesPostoperative ComplicationsTuberculosis, SpinalAdultAgedFemaleHumansMaleMiddle AgedRetrospective StudiesRisk FactorsSpinal FusionDeformity angular distance ratioDeformity angular ratioPostoperative neurological deficitsPost-tuberculous kyphosisRisk factorsSpinal deformity

Identifiers

PMID40293469

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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.