1,720,961 research outputs found
Anterior cruciate ligament repair using dynamic intraligamentary stabilization grants 88.5% survival at minimum follow-up of 5 years.
No full textPURPOSE
The aim of this study was to report on the revision rates and clinical outcomes following dynamic intraligamentary stabilization (DIS) at a minimum follow-up of 5 years and to investigate which preoperative or intraoperative characteristics could influence revision rates or clinical scores.
METHODS
The authors retrospectively assessed all 609 knees that underwent ACL repair using DIS at a single centre. At a minimum follow-up of 5 years, patients were assessed using the Lysholm, International Knee Documentation Committee (IKDC) and Tegner scores, as well as passive flexion and extension.
RESULTS
At a follow-up of 5.1 ± 0.3 years (range, 5-10), of the 609 patients, 428 patients were available for clinical assessment. Anterior tibial translation decreased from 9.7 ± 2.1 to 7.8 ± 1.9 mm, and side-to-side difference decreased from 4.3 ± 2.3 to 1.5 ± 1.8 mm. The postoperative Lysholm score was 96.9 ± 5.6, subjective IKDC was 95.6 ± 6.1 and Tegner scores ranged from 4 to 11, of which 51% of patients had a score of 7 or more. The estimated survival rate was 86% for the first half of the cohort and increased to 91% for the second half of the cohort.
CONCLUSION
At a minimum follow-up of 5 years following ACL repair using DIS, it was found that it grants satisfactory clinical outcomes and that surgeons should inform patients who have predispositions about the higher risk of revision.
LEVEL OF EVIDENCE
Level IV retrospective study
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Patient-Specific Instrumentation Reduces Deviations Between Planned and Post-Osteotomy Humeral Retrotorsion and Height in Shoulder Arthroplasty.
Full text linkBACKGROUND
Patient-specific instrumentation (PSI) may potentially improve humeral osteotomy in shoulder arthroplasty. The purpose of this study was to compare the deviation between planned and post-osteotomy humeral inclination, retrotorsion and height in shoulder arthroplasty, using PSI versus standard cutting guides (SCG).
METHODS
Twenty fresh-frozen cadaveric specimens were allocated to undergo humeral osteotomy using either PSI or SCG, such that the two groups have similar age, gender and side. Pre-osteotomy computed tomography (CT) scan was performed and used for the three-dimensional (3D) planning. The osteotomy procedure was performed using a PSI designed for each specimen or a SCG depending on the group. A post-osteotomy CT scan was performed. The pre-osteotomy and post-osteotomy 3D CT scan reconstructions were superimposed to calculate the deviation between planned and post-osteotomy inclination, retrotorsion and height. Outliers were defined as cases with one or more of the following deviations: >5° inclination, >10° retrotorsion, and >3 mm height. The deviation and outliers in inclination, retrotorsion and height were compared between the two groups.
RESULTS
The deviations between planned and post-osteotomy parameters were similar among the PSI and SCG groups for inclination (p=0.260), while they were significantly greater in the SCG group for retrotorsion (p10° in retrotorsion.
CONCLUSION
After 3D planning PSI compared to SCG reduces the deviation between planned and post humeral osteotomy retrotorsion and height
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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