1,720,956 research outputs found
Resection of the calcaneus as a treatment option in osteitis at following an open calcaneal fracture
No full textSurgical treatment of calcaneal fractures is demanding due to the poor musculocutaneous coverage. Infection with osteitis is a severe complication with open fractures. The appearance of osteitis requires aggressive surgical treatment including amputation in case of persistence, leading to considerable invalidism. We report the case of an 37-year-old mason with an grade III open calcaneal fracture caused by a fall. Osteitis appeared after primary osteosynthesis with open reduction and eventually - after several revisions required a calcanectomy. By preservation of the forefoot and midfoot and thanks to sufficient orthesis treatment the patient was able to return to his profession after eigth months
Treatment of diametaphyseal forearm fractures in children and adolescents
No full textZusammenfassung Operationsziel Die Osteosynthese bei dislozierten diametaphysären Unterarmfrakturen dient der Wiederherstellung von Anatomie und Funktion. Durch die Versorgung mit einer antegraden intramedullären Nagelosteosynthese im Radius sollen Länge, Rotation und Achse im Rahmen der altersspezifischen Korrekturgrenzen wiederhergestellt werden. Die ausreichende Stabilität gewährleistet eine frühfunktionelle Nachbehandlung ohne Last. Indikationen Dislozierte diametaphysäre Unterarm- oder Radiusfrakturen, die sich nicht geschlossen, stabil reponieren lassen oder außerhalb der altersspezifischen Korrekturgrenzen verbleiben. Kontraindikationen Radius- oder Unterarmfrakturen, die sich distal oder proximal des definierten Areals befinden. Im Zugangsweg befindliche Weichteildefekte, Kontaminationen oder Infekte. Operationstechnik Im Verlauf des Thompson-Zugangs wird der Soft-Spot zwischen M. extensor digitorum und M. extensor carpi radialis brevis aufgesucht und eine ca. 3–4 cm Hautinzision durchgeführt. Dann stumpfes Präparieren bis auf den Knochen unter Schonung des N. radialis profundus und superficialis. Retraktion der Muskulatur mit 2 Langenbeck-Haken. Eröffnen der Kortikalis mit einem Pfriem. Gegebenenfalls kann zuvor ein 2,5-mm-Bohrer mit Gewebeschutz bei sehr harter Kortikalis verwendet werden. Der TEN-Durchmesser (TEN = Titanium Elastic Nail) wird so gewählt, dass er etwa zwei Drittel des Markraumes ausfüllt. Es empfiehlt sich, ein Abflachen der TEN-Kufe mit einer Parallelflachzange durchzuführen. Nach geschlossener Reposition wird der TEN dann bis vor die Wachstumsfuge unter leicht rotierenden Bewegungen gebracht. Der TEN wird am proximalen Ende umgebogen und oberhalb der Muskelbäuche abgekniffen. Alternative Verfahren sind die Kirschner-Draht-Osteosynthese oder der retrograde TEN von radial oder dorsal, mit oder ohne additive Biegung. Weiterbehandlung Ziel der Osteosynthese ist die frühfunktionelle Nachbehandlung ohne Last. Sportkarenz wird für 8 Wochen empfohlen. Die Metallentfernung kann nach Konsolidierung zwischen 3 und 6 Monaten erfolgen. Ergebnisse Deutlich dislozierte bzw. außerhalb der Korrekturgrenzen liegende Radius- und Unterarmfrakturen im Kindesalter zeigen nach beschriebener Osteosynthesetechnik sehr gute Behandlungsergebnisse bei geringem Risikoprofil. Eine Pseudarthrose konnte genauso wie Nervenschäden nicht beobachtet werden. Eine sekundäre Dislokation trat nicht ein.Abstract Objective Osteosynthesis in dislocated diametaphyseal forearm fractures is intended to restore anatomy and function. Antegrade intramedullary nailing in the radius is used to restore length, rotation, and axis within the age-specific correction limits. Sufficient stability ensures early functional postoperative treatment without load. Indications Dislocated diametaphyseal forearm or radius fractures that cannot be closed, stably reduced, or remain outside the age-specific correction limits. Contraindications Radius or forearm fractures located distal or proximal to the defined area. Soft tissue defects, contamination or infections located in the access path. Surgical technique In the course of the Thompson approach, the soft spot between the extensor digitorum and extensor carpi radialis brevis muscles is located and an approx. 3–4 cm skin incision is made. Then blunt preparation down to the bone, sparing the profundus and superficial radial nerve. Retraction of the musculature with two Langenbeck hooks. Opening of the cortex with an awl. If necessary, a 2.5 mm drill with tissue protection can be used beforehand if the cortex is very hard. A titanium elastic nail (TEN) diameter is selected so that it fills approximately 2/3 of the medullary canal. It is recommended to flatten the TEN runner with parallel flattening forceps. After closed reduction, the TEN is then brought up in front of the growth plate with slightly rotating movements. The TEN is bent over at the proximal end and pinched off above the muscle bellies. Alternative procedures include Kirschner wire osteosynthesis or retrograde TEN from radial or dorsal, with or without bending. Postoperative management The aim of osteosynthesis is early functional follow-up without load. Sports abstinence is recommended for 8 weeks. Metal removal can be performed after consolidation between 3 and 6 months. Results Clearly dislocated or outside the correction limits infantile radius and forearm fractures show very good treatment results with a low risk profile after the described osteosynthesis technique. Pseudarthrosis and nerve damage were not observed. Secondary dislocation has not occurred.Zusammenfassung Operationsziel Die Osteosynthese bei dislozierten diametaphysären Unterarmfrakturen dient der Wiederherstellung von Anatomie und Funktion. Durch die Versorgung mit einer antegraden intramedullären Nagelosteosynthese im Radius sollen Länge, Rotation und Achse im Rahmen der altersspezifischen Korrekturgrenzen wiederhergestellt werden. Die ausreichende Stabilität gewährleistet eine frühfunktionelle Nachbehandlung ohne Last. Indikationen Dislozierte diametaphysäre Unterarm- oder Radiusfrakturen, die sich nicht geschlossen, stabil reponieren lassen oder außerhalb der altersspezifischen Korrekturgrenzen verbleiben. Kontraindikationen Radius- oder Unterarmfrakturen, die sich distal oder proximal des definierten Areals befinden. Im Zugangsweg befindliche Weichteildefekte, Kontaminationen oder Infekte. Operationstechnik Im Verlauf des Thompson-Zugangs wird der Soft-Spot zwischen M. extensor digitorum und M. extensor carpi radialis brevis aufgesucht und eine ca. 3–4 cm Hautinzision durchgeführt. Dann stumpfes Präparieren bis auf den Knochen unter Schonung des N. radialis profundus und superficialis. Retraktion der Muskulatur mit 2 Langenbeck-Haken. Eröffnen der Kortikalis mit einem Pfriem. Gegebenenfalls kann zuvor ein 2,5-mm-Bohrer mit Gewebeschutz bei sehr harter Kortikalis verwendet werden. Der TEN-Durchmesser (TEN = Titanium Elastic Nail) wird so gewählt, dass er etwa zwei Drittel des Markraumes ausfüllt. Es empfiehlt sich, ein Abflachen der TEN-Kufe mit einer Parallelflachzange durchzuführen. Nach geschlossener Reposition wird der TEN dann bis vor die Wachstumsfuge unter leicht rotierenden Bewegungen gebracht. Der TEN wird am proximalen Ende umgebogen und oberhalb der Muskelbäuche abgekniffen. Alternative Verfahren sind die Kirschner-Draht-Osteosynthese oder der retrograde TEN von radial oder dorsal, mit oder ohne additive Biegung. Weiterbehandlung Ziel der Osteosynthese ist die frühfunktionelle Nachbehandlung ohne Last. Sportkarenz wird für 8 Wochen empfohlen. Die Metallentfernung kann nach Konsolidierung zwischen 3 und 6 Monaten erfolgen. Ergebnisse Deutlich dislozierte bzw. außerhalb der Korrekturgrenzen liegende Radius- und Unterarmfrakturen im Kindesalter zeigen nach beschriebener Osteosynthesetechnik sehr gute Behandlungsergebnisse bei geringem Risikoprofil. Eine Pseudarthrose konnte genauso wie Nervenschäden nicht beobachtet werden. Eine sekundäre Dislokation trat nicht ein.Abstract Objective Osteosynthesis in dislocated diametaphyseal forearm fractures is intended to restore anatomy and function. Antegrade intramedullary nailing in the radius is used to restore length, rotation, and axis within the age-specific correction limits. Sufficient stability ensures early functional postoperative treatment without load. Indications Dislocated diametaphyseal forearm or radius fractures that cannot be closed, stably reduced, or remain outside the age-specific correction limits. Contraindications Radius or forearm fractures located distal or proximal to the defined area. Soft tissue defects, contamination or infections located in the access path. Surgical technique In the course of the Thompson approach, the soft spot between the extensor digitorum and extensor carpi radialis brevis muscles is located and an approx. 3–4 cm skin incision is made. Then blunt preparation down to the bone, sparing the profundus and superficial radial nerve. Retraction of the musculature with two Langenbeck hooks. Opening of the cortex with an awl. If necessary, a 2.5 mm drill with tissue protection can be used beforehand if the cortex is very hard. A titanium elastic nail (TEN) diameter is selected so that it fills approximately 2/3 of the medullary canal. It is recommended to flatten the TEN runner with parallel flattening forceps. After closed reduction, the TEN is then brought up in front of the growth plate with slightly rotating movements. The TEN is bent over at the proximal end and pinched off above the muscle bellies. Alternative procedures include Kirschner wire osteosynthesis or retrograde TEN from radial or dorsal, with or without bending. Postoperative management The aim of osteosynthesis is early functional follow-up without load. Sports abstinence is recommended for 8 weeks. Metal removal can be performed after consolidation between 3 and 6 months. Results Clearly dislocated or outside the correction limits infantile radius and forearm fractures show very good treatment results with a low risk profile after the described osteosynthesis technique. Pseudarthrosis and nerve damage were not observed. Secondary dislocation has not occurred
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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