Evidence map›Paper›PMID 26805460›Full record

ArticleJournal of biomechanics2016

Sagittal plane rotation center of lower lumbar spine during a dynamic weight-lifting activity.

Zhan Liu, Tsung-Yuan Tsai, Shaobai Wang, Minfei Wu, Weiye Zhong, Jing-Sheng Li, Thomas Cha, Kirk Wood, Guoan Li

Open access · greenAbstract read
In one paragraph

Article in Journal of biomechanics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

12 citing papers in PubMed, 29 citations in OpenAlex.

  1. Chronicity and physical activity levels independently associate with spatial patterns of multifidus fat infiltration in chronic low back pain patients.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
    Article
  2. Spatial patterns of fat within the deep multifidus as a biomarker for chronic low back pain.The spine journal : official journal of the North American Spine Society · 2026
    Observational
  3. Optimizing lordosis preservation in monosegmental lumbar spondylodesis: evaluating the efficacy of a novel noninvasive technique using intraoperative hip hyperextension.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2025
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  7. Spatial distribution of fat infiltration within the paraspinal muscles: implications for chronic low back pain.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 · 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

9 authors at 3 institutions in 2 countries.

Zhan LiuBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA; Provincial Key Laboratory of Biomechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, China.
Tsung-Yuan TsaiBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Shaobai WangBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Minfei WuThe Second Hospital of Jilin University, Changchun, Jilin 130041, China.
Weiye ZhongBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Jing-Sheng LiBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Thomas ChaBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Kirk WoodBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Guoan LiBioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA. Electronic address: gli1@mgh.harvard.edu.
Massachusetts General Hospital · USHarvard University · USSecond Affiliated Hospital of Jilin University · CN

Funding

In-vivo Lumbar Disc DeformationR21AR057989 · NIAMS · MASSACHUSETTS GENERAL HOSPITAL · PI LI, GUOAN · 2010 to 2011
$432k
NIAMS NIH HHS R21 AR057989NIAMS NIH HHS R21AR057989
6 · The paper itself

Abstract

This study investigated the center of rotation (COR) of the intervertebral segments of the lower lumbar spine (L4-L5 and L5-S1 segments) in sagittal plane during a weight-lifting (3.6 kg in each hand) extension activity performed with the pelvis constrained. Seven healthy subjects were studied using a dual fluoroscopic imaging technique. Using the non-weightbearing, supine position during MRI scan as a reference, the average intervertebral flexion angles of the L4-L5 and L5-S1 were 6.6° and 5.3° at flexion position of the body, respectively, and were -1.8° and -3.5° at extension position of the body, respectively. The CORs of the lower lumbar spine were found segment-dependent and changed with the body postures. The CORs of the L4-L5 segment were at the location about 75% posterior from the anterior edge of the disc at flexion positions of the body, and moved to about 92% of the posterior portion of the disc at extension positions of the body. The CORs of the L5-S1 segment were at 95% posterior portion of the disc at flexion positions of the body, and moved outside of the posterior edge of the disc by about 12% of the disc length at extension positions of the body. These results could help understand the physiological motion characters of the lower lumbar spine. The data could also provide important insights for future improvement of artificial disc designs and surgical implantation of the discs that are aimed to reproduce normal spinal functions.

Indexed as

AdultBiomechanical PhenomenaFemaleFluoroscopyHumansIntervertebral DiscLumbar VertebraeMagnetic Resonance ImagingMaleMiddle AgedMovementPostureRange of Motion, ArticularWeight LiftingCenter of rotationFluoroscopeIntervertebral discKinematicsLower lumbar spine

Identifiers

PMID26805460
PMCPMC4761462
OpenAlexW2214356377

What OpenQuestion holds

Textmetadata
LicenceTDM
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.