1,720,960 research outputs found
False aneurysm of the superficial femoral artery after total hip arthroplasty: a case report.
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Circular external fixation in complex tibia fractures: a case series and review of the literature
No full textObjectives: To analyze indications and results of circular external fixation applied to complex tibia fracture cases in the authors' experience and in the literature. Methods: 17 cases of complex tibia fracture treated with circular external fixation in 17 patients were retrospectively evaluated to assess clinical and radiographic results. Results: There were 9/17 open fractures and 8/17 closed fractures. Union was achieved in 16 on 17 cases (94.1%), with mean union time 6.7 months (range 4-18). A septic nonunion case occurred. Malunion occurred in 3 cases. At least one unplanned surgery was necessary in 6 cases (0.6 surgeries per patient). VAS mean values were 1.6 for pain (range 0-4), 2.7 for functional impairment (range 1-8) and 8.9 for satisfaction (range 6-10). Paley scores in bone transport cases were excellent or good in most cases. Superficial pin tract infection was common (64.7% of cases), while deep pin tract infections were not recorded. Other septic and non septic complications were recorded in 3 and 7 cases respectively. Conclusions: circular external fixation still represents a viable method to treat tibia fractures when fracture pattern is particularly complex, soft tissues are severely compromised or when acute bone or bone and soft tissue loss in present. Despite frequent complications, long treatment duration and unplanned surgeries clinical results and patients satisfaction are meanly good
Periprosthetic fractures: Treatment with Dall-Miles plates [Fratture periprotesiche: Trattamento con placche Pall-Miles]
No full textAim. Periprosthetic fractures pose an increasing challenge to the orthopaedic surgeon as the number total hip replacement operations and revisions continue to rise. The incidence of fractures varies depending on the implantation technique and the quality of the bone where the fractures occur. Methods. From March 2003 to June 2004, 15 patients treated at the Orthopedics and Traumatology Clinic, Genoa, and the Emergency Department of the San Martino Hospital, Genoa, for B1 or B2 periprosthetic fractures (Vancouver classification: 11 type B1, 4 type B2) received a Dall-Miles plate, of which 10 were primary implantations and 5 were revisions; the mean time from surgery to fracture was 4 years (range, 6 months to 12 years). Results. In all patients examined at follow-up, the mean time to fracture union was 4.5 months; the plates were well tolerated and none of them broke. Conclusion. The Dall-Miles plates offer a wide variety of solutions in treating periprosthetic fractures. The cable feedthroughs do not require extensive periosteal stripping, thus preserving the biology of the fracture focus and making the use of allografts or autografts subsequently unnecessary, which, in the authors' opinion and in contrast with the literature, are unneeded in the presence of a stable osteosynthesis
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
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