1,721,145 research outputs found
Shoulder Fractures in Context
Full text linkThis open access book offers comprehensive coverage of all relevant aspects of shoulder fractures, also known as fractures of the proximal humerus, with a special focus on existing controversies in their treatment. Throughout the volume the author outlines the development of the modern scientific understanding in the field and the increasing operative approach to these injuries throughout the 20th century. The volume is subdivided into five sections, the first of which introduces shoulder fractures, their morphology and epidemiology. The second one presents their history, from the earliest known medical text in ancient Egypt to the mid-twentieth century. In the third part, the author discusses the challenges implied in understanding and translating fracture patterns into hierarchies and classification systems. Based on current clinical trials, part four casts new light on the existing tension between an increasing interest in surgical procedures and implants, and the failure of emerging empirical evidence to demonstrate benefits for the vast majority of patients. In the book’s conclusions, elaborating on this evidence, the author shares his reflections on the changing approaches to shoulder fractures and interprets them within a broader context of intellectual history. This book appeals to a broad readership, including orthopaedic residents, shoulder surgeons, traumatologists, and other clinical decision-makers, and those with an interest in evidence-based practice and the history and philosophy of medicine
Management of fractures of the humerus in Ancient Egypt, Greece, and Rome: an historical review
No full textFractures of the humerus have challenged medical practitioners since the beginning of recorded medical history. In the earliest known surgical text, The Edwin Smith Papyrus (copied circa 1600 BC), three cases of humeral fractures were described. Reduction by traction followed by bandaging with linen was recommended. In Corpus Hippocraticum (circa 440-340 BC), the maneuver of reduction was fully described: bandages of linen soaked in cerate and oil were applied followed by splinting after a week. In The Alexandrian School of Medicine (third century BC), shoulder dislocations complicated with fractures of the humerus were mentioned and the author discussed whether the dislocation should be reduced before or after the fracture. Celsus (25 BC-AD 50) distinguished shaft fractures from proximal and distal humeral fractures. He described different fracture patterns, including transverse, oblique, and multifragmented fractures. In Late Antiquity, complications from powerful traction or tight bandaging were described by Paul of Aegina (circa AD 625-690). Illustrations from sixteenth and seventeenth century surgical texts are included to show the ancient methods of reduction and bandaging. The richness of written sources points toward a multifaceted approach to the diagnosis, reduction, and bandaging of humeral fracture in Ancient Egypt, Greece, and Rome
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
Revisiting Surgery for Proximal Humeral Fractures:How Much High-Quality Evidence Is Needed to De-Implement Surgery Introduced without High-Quality Evidence?
No full textCuff tear arthropathy in the nineteenth century:"chronic rheumatic arthritis" with "partial luxation upwards" of the humeral head
No full textIntroduction: Cuff tear arthropathy of the shoulder is a common indication for insertion of an increasing number of reverse shoulder arthroplasties. It is widely believed that this condition was unknown to medical practitioners and writers prior to the introduction of the term cuff tear arthropathy by Charles Neer in 1977. Purpose: To search nineteenth-century written sources for pathoanatomical and biomechanical descriptions of the typical changes found in cuff tear arthropathy. Methods: A historical review. Nineteenth-century medical textbooks, reviews, case series, autopsy reports and illustrations were systematically searched and retrieved for relevance. References were hand-searched. Illustrations were reproduced and interpreted. Results: A richly illustrated nineteenth-century literature was identified. The typical changes in cuff tear arthropathy were termed ‘chronic rheumatic arthritis’ of the shoulder with ‘partial luxation upwards’ of the humeral head and interpreted within a pathoanatomical and biomechanical framework. Detailed descriptions and illustrations of massive rotator cuff tears, biceps pathology and the osseous changes were identified and presented. Conclusion: The pathoanatomical and biomechanical changes later termed cuff tear arthropathy were well understood and nicely described in nineteenth-century medical literature.</p
Videnskabelig erkendelse, virkelighed og udvikling: introduktion til lægen Ludwik Flecks (1896-1961) videnskabsteori
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