1,720,964 research outputs found
Postero-medial approach procedure in the supine position for one-step anterior and posterior ankle arthroscopy.
No full textStandard arthroscopy of the ankle does not allow to approach at the same time the anterior and posterior compartments. Keeping the patient supine and with the application of judicious traction, anterior ankle arthroscopy allows to examine the various intra-articular structures, but treat is limited only to anterior pathology. Also, it is not possible to explore posterior compartment and posterior hindfoot through an anterior approach. Normally, for those patients in whom both the anterior and posterior compartments were to be operated upon, surgery is stopped, and the patient has to be re-positioned. We describe a 2 postero-medial hindfoot portals procedure, which allows to reach both the posterior aspect of the ankle joint and the extra-articular compartment of the hindfoot keeping the patient supine throughout the procedure. After arthroscopy of the anterior compartment using standard anterior portals, 2 postero-medial endoscopic approaches make it possible to visualize and treat pathologies of the posterior ankle and of the hindfoot, without prolonging the operation through the need to reposition the patient in the prone position
Arthroscopic anterior talofibular ligament reconstructin in chronic ankle instability: Two years results
No full textPurpose: In chronic lateral ankle instability, primary ligament repair is not always possible because of poor quality of the local tissues. A free autologous or allograft tendon graft or synthetic grafts are suitable alternative. We describe middle term results of arthroscopic reconstruction of the anterior talofibular ligament (ATFL) using a free autologous ipsilateral gracilis graft in patients with chronic ankle instability. Methods: Eleven patients with chronic lateral ankle instability with imaging evidence of isolated ATFL tear underwent arthroscopic reconstruction of the ATFL using a free ipsilateral gracilis graft. Functional and subjective assessment were performed after an average of 24 months following the index procedure. Results: At 24 months, all patients showed objective improvements. One patient reported transient dysaesthesiae on the dorsolateral aspect of the foot and heel. Conclusions: Arthroscopic isolated reconstruction of the ATFL with a free ipsilateral gracilis grafts is safe, allowing restoration of joint stability and low surgical morbidity. Study design: Case serie
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Relationship between hospital volumes and health outcomes: epidemiological evidence supporting the revision process of the Ministry of Health Decree no. 70 of 2 April 2015
No full textSince its enactment on 2 April 2015, the Decree of the Ministry of Health no.70 has provided a key framework for the reorganization of services to enhance the quality and safety of care. This decree presents the volume thresholds for a series of nosological areas and diagnostic-therapeutic procedures, aiming to improve healthcare outcomes. These thresholds are expected to be periodically updated based on the most recent scientific developments. AIM: In this perspective, this work intends to establish whether statistical correlations exist between volumes of activity and outcomes of hospital care. The scope is limited to several clinical conditions and therapeutic procedures for which specific indicators are provided by the National Healthcare Outcomes Programme (Programma Nazionale Esiti - PNE). METHODS: For each condition or procedure, the analysis shows the volume-outcome relationship by hospital centre by means of the Levenberg-Marquardt algorithm (software: XLSTAT). The existence of breakpoints is assessed through the use of segmented models (software: "segmented" R-Package). RESULTS: The results show a statistical correlation for the following: acute myocardial infarction (breakpoint: 91 hospitalizations per year; 95% CI: 81-101; p<0.0001); repair of an unruptured abdominal aortic aneurysm (breakpoint: 69 procedures per year; 95% CI: 52-86; p=0.146); lung cancer (breakpoint: 96 procedures per year; 95% CI: 60-132; p<0.01); knee arthroplasty (breakpoint: 91 procedures per year; 95% CI: 51-131; p=0.484). Conversely, the statistical analysis did not allow to accurately highlight a breakpoint for the isolated aorto-coronary bypass, percutaneous transluminal coronary angioplasty and hip arthroplasty. CONCLUSIONS: These results represent a useful knowledge contribution to support the revision process of the above-mentioned Decree. As regards the procedures that may not be currently assessed through this statistical analysis method, literature data is referred to that confirm that the current regulatory thresholds are in the safe range
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