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La tecnica di prelievo del tendine quadricipitale come innesto per la ricostruzione del LCA
No full textRicostruzione della membrana interossea dell’avambraccio mediante trapianto tendineo : procedura chirurgica e risultati clinici
No full textReconstruction of the forearm interosseous membrane by
autologous tendon graft: surgical method and clinical results
Ulnar and radial fractures involving the interosseous membrane and
associated to radial capitellum dislocation are named Monteggia fractures.
A.T., male, 26 years old, professional basket player, came to our attention
for an inveterate radial capitellum dislocation and MIO (interosseous membrane) lesion.
The lesions affecting these structures can cause the loss of function of elbow, wrist and hand if they are not properly treated. Usually the radius
transmits 80% of the wrist charge; in case of proximal migration the ulna
is overloaded and the wrist is painful. The MIO is one of the most important
structures for forearm stability. Since it assures longitudinal and transverse stability of the forearm, in case of lesion the radius could migrate proximally or the caput ulnae could be dorsally dislocated.
The patient was submitted to reduction of radial dislocation and MIO
reconstruction by autologous tendon graft.
At three-months’ follow up, the patient is satisfied, prono-supination is almost complete, extension is complete and flexion is 80°, no pain is reported.
At XR an aeterotopic calcification is present in the lateral region of the
elbow. Clinical results have been stable from the follow up at six months
to the latest clinical check in January 2010.
The treatment of the MIO lesion is still debated and choosing the tendon
graft is still an open chapter, since BPTB (bone patellar tendon bone), FRC (flexor radialis carpus), or achilleus from cadaver are all weaker than the MIO. The BPTB is the strongest in stiffness and longitudinal elongation; nevertheless the double FRC is a good solution. To avoid proximal radius migration, the safest solution is positioning a radial capitellum prosthesis, when this is possibl
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
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