1,721,136 research outputs found

    First reported case of a coronal hamate fracture associated with intrusion of the fifth metacarpal base, together with a fracture of the fourth metacarpal base

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    We present a case reporting a rare combination of base of fourth metacarpal fracture and coronal body of hamate fracture, treated conservatively with excellent results. High index of suspicion for undetected bony injuries drove the execution of a CT scan, which allowed us to make a full correct diagnosis and plan treatment. Moreover, this case becomes the first reported case in the literature of such injury causing the intrusion of the base of the fifth metacarpal within the hamate bone, thus causing the coronal pattern of the hamate fracture. Differently from the common surgical management of this type of injury, we successfully treated this patient with close reduction and immobilisation, with full recovery after 3 months

    Effectiveness of ankle arthroscopic debridement in acute, subacute ankle- bimalleolar, and trimalleolar fractures

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    Background: The purpose of this retrospective study was to evaluate the usefulness of ankle arthroscopy at the time of ORIF or after six months in patients with residual symptoms. The hypothesis was that in patients treated arthroscopically at the time of ORIF, there were faster and better clinical results than those treated after or untreated with arthroscopy. Methods: In this retrospective study, we compared three homogeneous groups of selected patients with specific inclusion criteria (144 in total, mean age 38.2 years). They have been surgically treated for an ankle fracture (bimalleolar or trimalleolar without frank syndesmotic injuries) with open technique (ORIF) or arthroscopic ORIF (AORIF), between 2013 and 2017. The AO classification system was used for each patient. The clinical assessment was based on the Foot and Ankle Outcome Score (FAOS). Results: At the final follow-up (mean 38 months), both patients treated with ankle arthroscopic debridement at the time of ORIF and patients treated with arthroscopic debridement after ORIF showed a significant improvement of the FAOS, which reported 84 and 85 respectively at final follow-up. Conclusion: Through minimally invasive visualization of intra-articular structures, ankle arthroscopy can offer an essential option for selected patients both in acute and in sequelae after an ankle fracture. More studies are needed to understand the real effectiveness of the procedure, especially in acute at the same time of osteosynthesis

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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
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