19 research outputs found
Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures
Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo
The pendulum: scientific, historical, philosophical and educational perspectives
A multidisciplinary approach to a universal science topic - scientific, mathematical, historical, methodological and educational
The renewal of case studies in science education
Abstract. Our objective in this paper is to clarify the contextual approach in science education and to suggest appropriate uses of history in the science classroom from early years through post secondary education. We present a description of the variety of approaches by which teachers and educators may include the history of science in science instruction. This is followed by five sections in which historical approaches appropriate for early years, middle years, senior years, college, and university level learning are discussed