3 resultados para bowing

em BORIS: Bern Open Repository and Information System - Berna - Suiça


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In his contribution, Joppke justifies his selection of foundational scholars by linking each to what he sees as the three key facets of citizenship: status, rights and identity. Maarten Vink explicitly links his research agenda to the first, status, and outlines why it is so important. In identifying three facets of citizenship, Joppke acknowledges that some academics would include political participation, but he ultimately decides against it. But here we can, and should, broaden citizenship studies by bringing in insights from the behavioral politics tradition in domestic politics - when and why people engage in political acts - and from the social movements literature in sociology. I believe that the American debate on immigration reform, admittedly stalled, would not have advanced as far as it has without the social movement activism of DREAMers - unauthorized young people pushing for a path to citizenship - and the belief that Barack Obama won re-election in part because of the Latino vote. Importantly, one type of political activism demands formal citizenship, the other does not. As many contributors note, the “national models” approach has had a significant impact on citizenship studies. Whether one views such models through a cultural, institutional or historical lens, this tends to be a top-down, macro-level framework. What about immigrants’ agency? In Canada, although the ruling Conservative government is shifting citizenship discourse to a more traditional language - as Winter points out - it has not reduced immigration, ended dual citizenship, or eliminated multiculturalism, all goals of the Reform Party that the current prime minister once helped build. “Lock-in” effects (or policy feedback loops) based on high immigrant naturalization and the coming of age of a second-generation with citizenship also d emands study, in North America and elsewhere. Much of the research thus far suggests that political decisions over citizenship status and rights do not seem linked to immigrants’ political activism. State-centered decision-making may have characterized policy in the early post-World War II period in Europe (and East Asia?), but does it continue to hold today? Majority publics and immigrant-origin residents are increasingly politicized around citizenship and immigration. Does immigrant agency extend citizenship status, rights and identity to those born outside the polity? Is electoral power key, or is protest necessary? How is citizenship practiced, and contested, irrespective of formal status? These are important and understudied empirical questions, ones that demand theoretical creativity - across sub-fields and disciplines - in conceptualizing and understanding citizenship in contemporary times.

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Congenital pseudarthrosis of the tibia (CPT) is caused by an ill-defined, segmental disturbance of periosteal bone formation leading to spontaneous bowing, followed by fracture and subsequent pseudarthrosis in the first 2 years of life. The results of conventional treatment modalities (e.g., bracing, internal and external fixation and bone grafting) are associated with high failure rates in terms of persisting pseudarthrosis, malunion and impaired growth. As a more promising alternative, a more aggressive approach, including wide resection of the affected bone, reconstruction with free vascularised fibula grafts from the healthy contralateral leg and stable external fixation at a very early stage has been suggested. Between 1995 and 2007, 10 children (age 12-31 months, median 20 months) suffering from CPT were treated at our institutions according to this principle. Two patients were treated before a fracture had occurred. The length of the fibula graft was 7-9cm. End-to-end anastomoses were performed at the level of the distal tibia stump. The follow-up was 80 months (median, range 12 months to 12 years). Radiologic examination at 6 weeks postoperatively showed normal bone density and structure of the transplanted fibula in all cases and osseous consolidation at 19 of the 20 graft/tibia junctions. One nonunion was sucessfully treated with bone grafting and plate osteosynthesis. Pin-tract infection occurred in three patients. Five children sustained graft fractures that were successfully treated with internal or external fixation. Two patients developed diminished growth of the affected limb or foot; all others had equal limb length and shoe size. At long-term follow-up, tibialisation of the transplant had occurred, and normal gait and physical activities were possible in all children. We conclude that in spite of a relatively high complication rate and the reluctance to perform free flap surgery in infants at this young age, the present concept may successfully prevent the imminent severe sequelae associated with CPT.

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PURPOSE: To describe scleral changes in chronic VKH. METHODS: Medical records of patients with chronic VKH were retrospectively reviewed. Change of scleral architecture was defined as progressive posterior bowing on OCT, axial length elongation, and/or increased myopia more than -1.0 D, not explicable by other etiologies. RESULTS: In total, 28 eyes (16 patients) with mean age of disease onset 32.5 ± 14.0 years were included in the study. Disease duration was 15.1 ± 10.2 years. Eight eyes (28.6%) showed progressive scleral architectural changes. Five eyes (18%) developed scleral changes on OCT, not seen on prior imaging (2-12 years earlier). One eye had posterior bowing on OCT with increased axial length, both eyes of a bilateral pseudophake developed increased myopia with increased axial length. Well-circumscribed chorioretinal atrophy within the arcade was associated with progressive scleral change. CONCLUSIONS: Progressive scleral change may develop as a late complication of VKH. The association with well-circumscribed chorioretinal atrophy suggests that chronic choroidal inflammation may be responsible.