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Attention Score in Context
| Title |
Biomechanical response of lumbar facet joints under follower preload: a finite element study
|
|---|---|
| Published in |
BMC Musculoskeletal Disorders, March 2016
|
| DOI | 10.1186/s12891-016-0980-4 |
| Pubmed ID | |
| Authors |
Cheng-Fei Du, Nan Yang, Jun-Chao Guo, Yun-Peng Huang, Chunqiu Zhang |
| Abstract |
Facet joints play a significant role in providing stability to the spine and they have been associated with low back pain symptoms and other spinal disorders. The influence of a follower load on biomechanics of facet joints is unknown. A comprehensive research on the biomechanical role of facets may provide insight into facet joint instability and degeneration. A nonlinear finite element (FE) model of lumbar spine (L1-S1) was developed and validated to study the biomechanical response of facets, with different values of follower preload (0 N,500 N,800 N,1200 N), under loadings in the three anatomic planes. In this model, special attention was paid to the modeling of facet joints, including cartilage layer. The asymmetry in the biomechanical response of facets was also discussed. A rate of change (ROC) and an average asymmetry factor (AAF) were introduced to explore and evaluate the preload effect on these facet contact parameters and on the asymmetry under different loading conditions. The biomechanical response of facets changed according to the loading condition. The preload amplified the facet force, contact area and contact pressure in flexion-extension; the same effect was observed on the ipsilateral facet while an opposite effect could be seen on the contralateral facet during lateral bending. For torsion loading, the preload increased contact area, decreased the mean contact pressure, but had almost no effect on facet force. However, all the effects of follower load on facet response became weaker with the increase of preload. The greatest asymmetry of facet response could be found on the ipsilateral side during lateral bending, followed by flexion, bending (contralateral side), extension and torsion. This asymmetry could be amplified by preload in the bending (ipsilateral), torsion loading group, while being reduced in the flexion group. An analysis combining patterns of contact pressure distribution, facet load, contact area and contact pressure can provide more insight into the biomechanical role of facets under various moment loadings and follower loads. The effect of asymmetry on facet joint response should be fully considered in biomechanical studies of lumbar spine, especially in post structures subjected to physiological loadings. |
Mendeley readers
The data shown below were compiled from readership statistics for 88 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Malaysia | 1 | 1% |
| Germany | 1 | 1% |
| Unknown | 86 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 17 | 19% |
| Researcher | 15 | 17% |
| Student > Ph. D. Student | 14 | 16% |
| Other | 6 | 7% |
| Student > Bachelor | 5 | 6% |
| Other | 9 | 10% |
| Unknown | 22 | 25% |
| Readers by discipline | Count | As % |
|---|---|---|
| Engineering | 20 | 23% |
| Medicine and Dentistry | 14 | 16% |
| Nursing and Health Professions | 5 | 6% |
| Neuroscience | 4 | 5% |
| Agricultural and Biological Sciences | 3 | 3% |
| Other | 9 | 10% |
| Unknown | 33 | 38% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 March 2017.
All research outputs
#18,465,704
of 22,880,230 outputs
Outputs from BMC Musculoskeletal Disorders
#3,138
of 4,056 outputs
Outputs of similar age
#218,471
of 299,441 outputs
Outputs of similar age from BMC Musculoskeletal Disorders
#64
of 89 outputs
Altmetric has tracked 22,880,230 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 4,056 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.1. This one is in the 10th percentile – i.e., 10% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 299,441 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 15th percentile – i.e., 15% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 89 others from the same source and published within six weeks on either side of this one. This one is in the 6th percentile – i.e., 6% of its contemporaries scored the same or lower than it.