Evidence map›Paper›PMID 34217257›Full record

ArticleBMC musculoskeletal disorders2021

Clinical impact and imaging results after a modified procedure of ACDF: a prospective case-controlled study based on ninety cases with two-year follow-up.

Shunmin Wang, Jian Zhu, Kaiqiang Sun, Rongzi Chen, Jie Cao, Ruijin You, Aigang Liu, Feng Zhao, Jiangang Shi

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

5 citing papers in PubMed, 8 citations in OpenAlex.

  1. MRI-based endplate bone quality score independently predicts cage subsidence after anterior cervical corpectomy fusion.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

9 authors at 2 institutions in 1 country.

Shunmin Wang *910 Hospital of China Joint Logistics Support Force, 180 Garden Road, Fengze District, Quanzhou City, Fujian Province, China.
Jian Zhu *Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Second Military Medical University, No.415 Fengyang Road, Shanghai, 200003, People's Republic of China.
Kaiqiang Sun *Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Second Military Medical University, No.415 Fengyang Road, Shanghai, 200003, People's Republic of China.
Rongzi Chen *910 Hospital of China Joint Logistics Support Force, 180 Garden Road, Fengze District, Quanzhou City, Fujian Province, China.
Jie Cao910 Hospital of China Joint Logistics Support Force, 180 Garden Road, Fengze District, Quanzhou City, Fujian Province, China.
Ruijin You910 Hospital of China Joint Logistics Support Force, 180 Garden Road, Fengze District, Quanzhou City, Fujian Province, China.
Aigang Liu *910 Hospital of China Joint Logistics Support Force, 180 Garden Road, Fengze District, Quanzhou City, Fujian Province, China.
Feng Zhao910 Hospital of China Joint Logistics Support Force, 180 Garden Road, Fengze District, Quanzhou City, Fujian Province, China. zhaofen1800@sina.com.
Jiangang ShiDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Second Military Medical University, No.415 Fengyang Road, Shanghai, 200003, People's Republic of China. changzhengspine@smmu.edu.cn.
The 180th Hospital of PLA · CNSecond Military Medical University · CN

Funding

National Natural Science Foundation of China No. 81871828, No. 81702141, No.81802218
6 · The paper itself

Abstract

STUDY

designThis is a prospective case-controlled study.

backgroundTo analyze the postoperative axial pain and cage subsidence of patients presenting with cervical spondylotic myelopathy (CSM) after a modified procedure of ACDF (mACDF).

methodsNinety patients with CSM were prospectively collected from 2014 to 2018. The patients were divided into spread group and non-spread group (48:42 ratio) according to the cage placement with or without releasing the Caspar cervical retractor after decompression. Spread group received conventional ACDF and non-spread group received mACDF. Patients were followed-up for at least 24 months after surgery. Radiologic data, including height of intervertebral space and Cobb Angle, were collected. Nervous system function was obtained using JOA scores, and level of pain was assessed using VAS scores.

resultsA total of 90 patients were enrolled and the patients were divided into spread group (n = 48) and none-spread group(n = 42). Cage subsidence of (spread group vs none-spread group) was (0.82 ± 0.68 vs 0.58 ± 0.81) mm, (0.64 ± 0.77 vs 0.34 ± 0.46) mm, (0.48 ± 0.43 vs 0.25 ± 0.28) mm, and (0.45 ± 0.47 vs 0.17 ± 0.32) mm at 3 months, 6 months, 12 months and 24 months, respectively. The period exhibiting the most decrease of the height of intervertebral space was 3 months postoperatively. However, there was no statistical difference in the height of intervertebral space, JOA or VAS scores at the final follow-up between the two groups.

conclusionsThe mACDF can avoid excessive distraction by releasing the Caspar Cervical retractor, restore the "natural height" of cervical vertebra, relieve immediate pain after surgery, and prevent rapid Cage subsidence and the loss of cervical curvature.

Indexed as

Spinal FusionSpondylosisCervical VertebraeDiskectomyFollow-Up StudiesHumansProspective StudiesRetrospective StudiesTreatment OutcomeAxial painCage subsidenceCervical spondylotic myelopathyModified ACDFNatural height

Identifiers

PMID34217257
PMCPMC8254952
OpenAlexW3129782531

What OpenQuestion holds

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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.