1,720,959 research outputs found
Inverse shoulder tumor megaprosthesis after large bone resection in massive metastasis of the proximal humerus
No full textBackground and aim: Bone metastases are a significant prognostic factor in the history of cancer and often involve pain and a great impairment of the quality of life. The complete resection of tumor tissue is increasingly performed in patients with solitary bone metastases, to improve the survival of patients and their functional outcomes Methods: We report the case of a 65-year-old man with a painful, massive, highly perfused osteolytic lesion localized at the proximal third of the humerus, associated with extensive lesions of the rotator cuff tendons was diagnosed with keratoblastic squamous cell lung cancer metastasis. Results: The patient underwent shoulder and proximal humerus reconstruction with inverse tumor megaprosthesis after embolization of the lesion. At 3 and 6 months FU, a nearly complete resolution of painful symptoms, a significant improvement in functional skills, and better execution of most of the activities of daily life have been reported. Conclusions: Accordingly with the literature the inverse shoulder megaprosthesis seems able to restore a satisfactory function and the silver-coated modular tumor system appears as a safe and viable treatment option in metastases tumor of proximal humerus
Is there a relation between loss of shoulder external rotation and sternoclavicular joint disorders?
No full textBackground and aim: Scapulothoracic movements are essential in shoulder kinematics and can partially compensate stiffness and loss of motion of glenohumeral joint. The scapulothoracic movement is strictly dependent on the translation and rotation of the clavicle at the sternoclavicular joint (SCJ), this being the only true joint between the axial and the upper appendicular skeleton. Aim of the study is to define a possible correlation between loss of shoulder external rotation following surgery for anterior shoulder instability and long-term sternoclavicular joint disorders. Methods: A group of 20 patients and a group of 20 healthy volunteers were studied. Results: In the statistical analysis of the patient group and of the two groups jointly, the association between the reduction of shoulder external rotation and the onset of disorder of SCJ appeared statistically significant. Conclusions: Our results provide support for an association between some disorders of the SCJ and the alterations of the shoulder kinematics associated with a reduction of ROM in external rotation. Our sample is too small to allow definitive conclusions to be drawn. These results, if confirmed by larger studies, could help us further clarify the complex kinematics of the shoulder girdle. (www.actabiomedica.it
Resumption of physical activity and sport after knee replacement
No full textPurpose: to assess the resumption of physical activity after knee replacement. Methods: retrospective study. Results: 118 patients were included in the final analysis. A resumption of >93% of the activities performed before surgery was observed. Logistic regression analysis did not show any significant associations between postoperatory activity and epidemiological and clinical variables except the function perceived by the patient. Conclusions: the resumption of physical activity and sport is a paramount expectation for active patients. A clearer definition of physical activity and sports realistically achievable after a knee prosthesis is necessary but not yet fully available
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
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
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