Evidence map›Paper›PMID 34668324›Full record

ArticleOrthopaedic surgery2021

Symmetry in Paraspinal Muscles as a Predictor of the Development of Pregnancy-Related Low Back and Pelvic Pain: A Prospective Study.

Gong Long, Zhi-Yuan Fang, Tang Xiang-Sheng, Yang Feng, Ma Hao-Ning, Hao Qing-Ying, Yi Ping, Tan Ming-Sheng

Open access · goldAbstract read
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Article in Orthopaedic surgery, 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
1.2field-weighted citation impact, top 20% 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.

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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

8 authors at 3 institutions in 2 countries.

Gong Long *Department of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.ORCID https://orcid.org/0000-0002-6040-7537
Zhi-Yuan Fang *Department of Orthopaedic, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China.
Tang Xiang-ShengDepartment of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.
Yang FengDepartment of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.
Ma Hao-NingDepartment of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.
Hao Qing-YingDepartment of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.
Yi PingDepartment of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.
Tan Ming-ShengDepartment of Orthopaedic, China-Japan Friendship Hospital, Beijing, China.
China-Japan Friendship Hospital · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNBeijing University of Chinese Medicine · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo determine the asymmetry in the paraspinal muscle before pregnancy and evaluate its association with pregnancy-associated lumbopelvic pain (LPP).

methodsThis was a prospective case-control study conducted from January 2017 and December 2018. A total of 171 subjects (mean age ± SD, 27.4 ± 5.8 years) were finally divided into the LBP group, PGP group, and no LPP group. Each subject was asked to follow a standardized clinical imaging protocol before the pregnancy. The area of muscles (multifidus, erector spinae, and psoas muscles) on the axial slice at mid-disc of L

resultsA total of 124 subjects (72.5%) (28.5 ± 5.2 years) had LPP during pregnancy. Forty-eight (38.7%) individuals had low back pain (LBP) and 76 (61.3%) had pelvic girdle pain (PGP). Seventy-six women (44.4%) were determined to have asymmetry in paraspinal muscle according to the definition in this methods section. The duration of follow-up was 24 months postpartum. A total of 39 (31.5%) women unrecovered from LPP. F/T-CSA was significantly decreased for LBP in the PGP group than in the and control group (0.03 ± 0.02 vs 0.05 ± 0.03 vs 0.12 ± 0.05, P < 0.001). Meanwhile, significant differences were detected in both groups (all P < 0.001). In patients with LBP, the level of paraspinal asymmetry, represented by the difference in F/T-CSA, was positively correlated with pain scores (r = 0.52, P < 0.01). However, no statistically significant correlation between pain scores and paraspinal asymmetry was found in PGP (r = 0.42, P > 0.05). Asymmetry in the paraspinal muscle (adjusted OR = 1.5), LBP (adjusted OR = 1.6), LPP in a previous pregnancy (adjusted OR = 1.4), sick leave ≥90 days (adjusted OR = 1.2), and heavy labor (adjusted OR = 1.2) were risk factors for the unrecovered LPP during pregnancy.

conclusionsAsymmetrical muscular compositions could lead to abnormal biomechanics for the segmental motions. Lateral-directed physical training and stretching may help decrease the occurrence and severity of this condition.

Indexed as

AdultCase-Control StudiesFemaleHumansLow Back PainLumbar VertebraeMagnetic Resonance ImagingParaspinal MusclesPelvic PainPregnancyPregnancy ComplicationsProspective StudiesAsymmetryLow back painParaspinal musclesPredictorPregnancy

Identifiers

PMID34668324
PMCPMC8654660
OpenAlexW3206029577

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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.