Evidence map›Paper›PMID 33573617›Full record

Observational studyBMC musculoskeletal disorders2021

Characteristics of relief and residual low back pain after discectomy in patients with lumbar disc herniation: analysis using a detailed visual analog scale.

Hiroshi Takahashi, Yasuchika Aoki, Masahiro Inoue, Junya Saito, Arata Nakajima, Masato Sonobe, Yorikazu Akatsu, Keita Koyama, Yasuhiro Shiga, Kazuhide Inage and 17 more

Open access · goldAbstract readObservational Study
In one paragraph

Observational study 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 13 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 4 pooled it
3.5field-weighted citation impact, top 7% 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

13 citing papers in PubMed, 4 syntheses or guidelines pooled it, 29 citations in OpenAlex.

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  11. Percutaneous endoscopic lumbar discectomyFrontiers in surgery · 2022
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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

27 authors at 5 institutions in 1 country.

Hiroshi TakahashiDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan. hirochann@syd.odn.ne.jp.ORCID http://orcid.org/0000-0002-3497-4802
Yasuchika AokiDepartment of Orthopaedic Surgery, Eastern Chiba Medical Center, Togane, Japan.
Masahiro InoueDepartment of Orthopaedic Surgery, Eastern Chiba Medical Center, Togane, Japan.
Junya SaitoDepartment of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan.
Arata NakajimaDepartment of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan.
Masato SonobeDepartment of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan.
Yorikazu AkatsuDepartment of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan.
Keita KoyamaDepartment of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan.
Yasuhiro ShigaDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Kazuhide InageDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Yawara EguchiDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Sumihisa OritaDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Satoshi MakiDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Takeo FuruyaDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Tsutomu AkazawaDepartment of Orthopaedic Surgery, St. Marianna University School of Medicine, Kawasaki, Japan.
Tetsuya AbeDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Toru FunayamaDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Hiroshi NoguchiDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Kousei MiuraDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Kentaro MatakiDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Yosuke ShibaoDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Fumihiko EtoDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Mamoru KonoDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Masao KodaDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Masashi YamazakiDepartment of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan.
Seiji OhtoriDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Koichi NakagawaDepartment of Orthopaedic Surgery, Toho University Sakura Medical Center, Sakura, Japan.
University of Tsukuba · JPChiba University · JPToho University · JPTeikyo University Chiba Medical Center · JPSt. Marianna University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeveral authors have reported favorable results in low back pain (LBP) for patients with lumbar disc herniation (LDH) treated with discectomy. However, detailed changes over time in the characteristics and location of LBP before and after discectomy for LDH remain unclear. To clarify these points, we conducted an observational study to determine the detailed characteristics and location of LBP before and after discectomy for LDH, using a detailed visual analog scale (VAS) bilaterally.

methodsWe included 65 patients with LDH treated by discectomy in this study. A detailed VAS for LBP was administered with the patient under 3 different conditions: in motion, standing, and sitting. Bilateral VAS was also administered (affected versus opposite side) for LBP, lower extremity pain (LEP), and lower extremity numbness (LEN). The Oswestry Disability Index (ODI) was used to quantify clinical status. Changes over time in these VAS and ODI were investigated. Pfirrmann grading and Modic change as seen by magnetic resonance imaging (MRI) were reviewed before and 1 year after discectomy to determine disc and endplate condition.

resultsBefore surgery, LBP on the affected side while the patients were in motion was significantly higher than LBP while they were sitting (p = 0.025). This increased LBP on the affected side in motion was improved significantly after discectomy (p < 0.001). By contrast, the residual LBP while sitting at 1 year after surgery was significantly higher than the LBP while they were in motion or standing (p = 0.015). At 1 year following discectomy, residual LBP while sitting was significantly greater in cases showing changes in Pfirrmann grade (p = 0.002) or Modic type (p = 0.025).

conclusionsImprovement of LBP on the affected side while the patient is in motion suggests that radicular LBP is improved following discectomy by nerve root decompression. Furthermore, residual LBP may reflect increased load and pressure on the disc and endplate in the sitting position.

Indexed as

Intervertebral Disc DisplacementLow Back PainDiskectomyHumansLumbar VertebraeTreatment OutcomeVisual Analog ScaleLumbar disc herniationRadicular low back painResidual low back painVisual analog scale

Identifiers

PMID33573617
PMCPMC7879619
OpenAlexW3127698304

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.