46 research outputs found

    To what extent is climate change adaptation a novel challenge for agricultural modellers?

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    Modelling is key to adapting agriculture to climate change (CC), facilitating evaluation of the impacts and efficacy of adaptation measures, and the design of optimal strategies. Although there are many challenges to modelling agricultural CC adaptation, it is unclear whether these are novel or, whether adaptation merely adds new motivations to old challenges. Here, qualitative analysis of modellers’ views revealed three categories of challenge: Content, Use, and Capacity. Triangulation of findings with reviews of agricultural modelling and Climate Change Risk Assessment was then used to highlight challenges specific to modelling adaptation. These were refined through literature review, focussing attention on how the progressive nature of CC affects the role and impact of modelling. Specific challenges identified were: Scope of adaptations modelled, Information on future adaptation, Collaboration to tackle novel challenges, Optimisation under progressive change with thresholds, and Responsibility given the sensitivity of future outcomes to initial choices under progressive change

    Growth-preserving instrumentation in early-onset scoliosis patients with multi-level congenital anomalies

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    Study design: Retrospective. Objectives: To assess final outcomes in patients with early-onset scoliosis (EOS) who underwent growth-preserving instrumentation (GPI). Summary of background data: Various types of growth-preserving instrumentation (GPI) are frequently employed, but until recently had not been utilized long enough to assess final outcomes. Methods: GPI �graduates� with multi-level congenital curves were identified. Graduation was defined as a final fusion or 5 years of follow-up without planned future surgeries. Outcomes included radiographic parameters and complications. Results: 26 patients were included. 11 had associated diagnoses; eight had fused ribs. 17 were treated with traditional growing rods, seven with vertically expandable prosthetic ribs, and two with Shilla procedures. The mean GPI spanned 12.3 levels including 10.7 motion segments, age at index surgery was 5.5 years, treatment spanned 7.5 years, and follow-up was 9.2 years. 24 patients underwent final fusion. Mean major curve decreased from 73° to 49° with index surgery (p ' 0.01) and remained unchanged through a final follow-up. Final major curve was ' 40° in 9 patients (35), 40°�60° in 11 patients (42), and ' 60° in 6 patients (23). None worsened throughout treatment. Mean T1�T12 height increased 2.4 cm with index surgery (p = 0.02) and 5.4 cm total (p ' 0.01). T1�T12 height increased in all patients and was ultimately ' 18 cm in 10 patients (38), 18�22 cm in 10 patients (38), and ' 22 cm in 6 patients (23). On average, there were 2.6 complications per patient, including 1.7 implant failures. 12 patients (46) experienced � 3 complications; four patients (15) experienced none. Conclusion: We observed successful prevention of deformity progression but substantial residual deformity among GPI graduates with multi-level congenital EOS. Most coronal curve correction was attained during GPI implantation; thoracic height improved throughout treatment. While some favorable results were found, treatment strategies allowing improved deformity correction would be valuable for this challenging population. Level of evidence: Therapeutic-III. © 2020, Scoliosis Research Society
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