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Vitamin D deficiency adversely affects early post-operative functional outcomes after total knee arthroplasty

Overview of attention for article published in Knee Surgery, Sports Traumatology, Arthroscopy, June 2016
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Title
Vitamin D deficiency adversely affects early post-operative functional outcomes after total knee arthroplasty
Published in
Knee Surgery, Sports Traumatology, Arthroscopy, June 2016
DOI 10.1007/s00167-016-4209-8
Pubmed ID
Authors

Keun-Young Shin, Kwan Kyu Park, Seong-Hwan Moon, Ick Hwan Yang, Ho-June Choi, Woo-Suk Lee

Abstract

Vitamin D has received considerable attention in recent years owing to the increasing evidence of its importance in muscle function and physical performance. The present study attempted to determine whether patients with low serum vitamin D levels had impairment in early functional outcomes following total knee arthroplasty (TKA). This was a prospective cohort study that included 92 patients. Patients were divided into two groups according to their vitamin D levels as assessed at the preoperative visit: (1) vitamin D-deficient group, serum 25-hydroxyvitamin D3 (25(OH)D) levels <12 ng/mL; (2) vitamin D non-deficient group, serum 25(OH)D levels ≥12 ng/mL. American Knee Society Score (KSS) and four other performance tests including the alternative step test (AST), six-metre walk test (SMT), sit-to-stand test (STS), and timed up and go test (TUGT) were used for assessment of post-operative function. All assessments were performed one day before and three months after TKA. Of the 92 patients included in the study, 87 patients performed all required assessments. The mean post-operative functional KSS was significantly lesser in the vitamin D-deficient group than in the vitamin D non-deficient group (67.2 vs. 73.4, p = 0.031). The mean values of time taken for post-operative AST (16.6 vs. 14.6 s, p = 0.033) and SMT (8.8 vs. 7.7 s, p = 0.012) were significantly longer in the vitamin D-deficient group than in the vitamin D non-deficient group. Post-operative STS and TUGT demonstrated higher values for mean time taken in the vitamin D-deficient group than in the vitamin D non-deficient group, but these were not statistically significant (13.6 vs. 12.4 s, not significant (n.s.); 12.7 vs. 11.7 s, n.s., respectively). Early post-operative functional outcomes following TKA appear to be adversely affected by vitamin D deficiency. Prospective cohort study, Level II.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 34 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 6 18%
Other 5 15%
Unspecified 4 12%
Student > Master 4 12%
Student > Postgraduate 3 9%
Other 12 35%
Readers by discipline Count As %
Medicine and Dentistry 19 56%
Unspecified 6 18%
Nursing and Health Professions 4 12%
Engineering 2 6%
Sports and Recreations 1 3%
Other 2 6%

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 19 June 2016.
All research outputs
#9,763,542
of 12,215,797 outputs
Outputs from Knee Surgery, Sports Traumatology, Arthroscopy
#1,134
of 1,502 outputs
Outputs of similar age
#190,428
of 271,993 outputs
Outputs of similar age from Knee Surgery, Sports Traumatology, Arthroscopy
#45
of 66 outputs
Altmetric has tracked 12,215,797 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 1,502 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.8. 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 271,993 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 17th percentile – i.e., 17% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 66 others from the same source and published within six weeks on either side of this one. This one is in the 13th percentile – i.e., 13% of its contemporaries scored the same or lower than it.