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X Demographics
Mendeley readers
Attention Score in Context
| Title |
The paradoxical relationship between ligamentum flavum hypertrophy and developmental lumbar spinal stenosis
|
|---|---|
| Published in |
Scoliosis and Spinal Disorders, September 2016
|
| DOI | 10.1186/s13013-016-0088-5 |
| Pubmed ID | |
| Authors |
Prudence Wing Hang Cheung, Vivian Tam, Victor Yu Leong Leung, Dino Samartzis, Kenneth Man-Chee Cheung, Keith Dip-Kei Luk, Jason Pui Yin Cheung |
| Abstract |
Ligamentum flavum (LF) hypertrophy is a common cause of lumbar spinal stenosis and is thought to be degeneration-driven. Developmental spinal stenosis (DSS) is characterized by pre-existing narrowed spinal canals and is likely a developmental problem that occurs in childhood. In these cases, the LF may demonstrate different characteristics as compared to degeneration-driven stenosis. Thus, this study aimed to investigate the relationship between histological changes of LF and canal size. Patients who had surgical decompression for lumbar spinal stenosis were prospectively recruited and divided into three groups (critical DSS, relative DSS and non-DSS) based on previously defined anteroposterior bony spinal canal diameter measurements on MRI. The degree of disc degeneration and LF thickness were also measured from L1 to S1. Surgical LF specimens were retrieved for histological assessment of fibrotic grade and area of fibrosis. A total of 19 females and 15 males (110 LF specimens) with an overall mean age of 65.9 years (SD ± 9.8 years) were recruited. DSS was found to have a significant negative correlation (p < 0.001) with LF thickness, its fibrotic grade and area of fibrosis (%). Non-DSS exhibited a significant positive relationship with the degree of LF fibrosis. Disc degeneration and LF thickness had no correlation with LF histology. Our study is the first to definitively note that degeneration is the cause of LF fibrosis in non-DSS patients; however, in contrast, an inverse relationship exists between canal size and LF fibrosis in DSS patients, suggesting a different pathomechanism. Hence, despite a similar degree of LF thickness, DSS patients have LF with less fibrosis compared with non-DSS patients. Further investigation of the cause of LF changes in DSS is necessary to understand this relationship. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Cyprus | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 44 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Egypt | 1 | 2% |
| Unknown | 43 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Postgraduate | 7 | 16% |
| Other | 4 | 9% |
| Student > Ph. D. Student | 4 | 9% |
| Researcher | 4 | 9% |
| Professor > Associate Professor | 4 | 9% |
| Other | 9 | 20% |
| Unknown | 12 | 27% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 22 | 50% |
| Agricultural and Biological Sciences | 2 | 5% |
| Biochemistry, Genetics and Molecular Biology | 2 | 5% |
| Neuroscience | 2 | 5% |
| Nursing and Health Professions | 1 | 2% |
| Other | 4 | 9% |
| Unknown | 11 | 25% |
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 24 February 2017.
All research outputs
#20,407,586
of 22,957,478 outputs
Outputs from Scoliosis and Spinal Disorders
#91
of 97 outputs
Outputs of similar age
#293,339
of 336,141 outputs
Outputs of similar age from Scoliosis and Spinal Disorders
#9
of 12 outputs
Altmetric has tracked 22,957,478 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 97 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.4. This one is in the 1st percentile – i.e., 1% 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 336,141 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 12 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.