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BACKGROUND Periprosthetic fracture remains a major source of reoperation following total hip arthroplasty (THA). Within 90 days of surgery, fractures may occur spontaneously or with minor injury and are therefore more likely related to patient factors including anatomic variation. METHODS From 2008 to 2018, 16,254 primary THAs were performed at our institution; of those, 48 were revised for periprosthetic fracture within 90 days of surgery. A control group of 193 patients undergoing THA for hip osteoarthritis (OA) was randomly selected from the source population. We excluded patients with genetic bone disease and THA performed for hip fracture. We used logistic regression to analyze associations between patient factors (demographics, anatomical factors, comorbidities, surgical technique, and implants) and odds of 90-day periprosthetic fracture. RESULTS Increased age was significantly associated with fracture (P = .002), as was female gender (P = .046). After adjusting for age and gender, absence of contralateral OA was associated with increased odds of fracture relative to patients with contralateral OA (odds ratio [OR] 3.85, 95% confidence interval [CI] 1.60-9.29), as was having a contralateral THA in place (OR 3.70, 95% CI 1.59-8.60). The neck-shaft angle, femoral offset, and the Dorr classification were not associated with increased odds of fracture. Additionally, the distance from the tip of the trochanter to the top of the femoral head was associated with increased odds of fracture per half centimeter (OR 1.48, 95% CI 1.14-1.93). CONCLUSION Risk of early postoperative periprosthetic fracture following THA is increased with age, female gender, and increasing distance from the greater trochanter to the top of the femoral head; and decreased in the setting of contralateral hip OA. selleck chemical The trochanter-head distance correlation with periprosthetic hip fracture indicates that the preoperative anatomy may influence PPF, particularly regarding how that anatomy is reconstructed. BACKGROUND Total hip arthroplasty (THA) candidates have historically received high doses of opioids within the perioperative period; however, the amounts are being continually reduced as awareness of opioid abuse spreads. Here we seek to evaluate the effectiveness of a novel opiate-sparing protocol (OSP) for primary THAs in reducing opiate administrations, while maintaining similar levels of pain control and postoperative function. METHODS All patients undergoing primary THA between January 1, 2019 and June 30, 2019 were placed under a novel OSP. Data were prospectively collected as part of standard of care. To assess the primary outcome of opiate consumption, nursing documented opiate administration events were converted into morphine milligram equivalences (MMEs) per patient encounter per 24-hour interval. Postoperative pain and functional status were assessed as secondary outcomes using the Verbal Rating Scale for pain and the Activity Measure for Post-Acute Care scores, respectively. RESULTS One thousand fifty primary THAs had received our institution's OSP, and 953 patients were utilized as our historical control. OSP patients demonstrated significantly lower 0-24, 24-48, and 48-72 hours with less opiate administration variance (total MME Control 75.55 ± 121.07 MME vs OSP 57.10 ± 87.48 MME; 24.42% decrease, P less then .001). Although pain scores reached statistical significance between 0 and 12 (Control 2.09 vs OSP 2.36, P less then .001), their differences were not clinically significant. Finally, OSP patients demonstrated a trend toward higher Activity Measure for Post-Acute Care scores across all 6 domains (total scores Control 20.53 ± 3.67 vs OSP 20.76 ± 3.64, P = .18). CONCLUSION Implementation of an OSP can significantly decrease the utilization of opioids in the immediate postoperative period. Inpatient opioid administration can be significantly reduced while maintaining a comparable and non-inferior level of pain and function. A growing body of literature suggests that cannabis intake can induce memory loss in humans and animals. Besides the recreational use, daily cannabis users may also belong to the ever-increasing population of patients who are administered cannabis as a medicine. As such, they also can experience impairments in memory as a negative side effect of their therapy. Comprehension of the neurobiological mechanisms responsible for such detrimental effects would be therefore of paramount relevance to public health. The investigation of neurobiological mechanisms in humans, despite the progress in the development of imaging technologies that allow the study of brain structure and function, still suffers substantial limitations. Animal models, instead, enable us to establish a causal relationship and thus to better elucidate the neurobiological mechanisms underlying the process under study. In this review, we will attempt to collect the insight coming from animal models about cannabis effects on memory, trying to depict a picture of the neurobiological mechanisms contributing to the development of cognitive deficits following cannabis use. V.PROBLEM Despite long standing strategic level ambitions to increase access to continuity of carer (CoC) models in maternity services, implementation of CoC in the United Kingdom (UK) has been generally small-scale and short lived. This indicates problems in implementing and sustaining CoC as the main model of care provision, and as such a need to better understand the process of implementation itself. AIM To use normalisation process theory (NPT) to underpin development of a conceptual implementation framework for CoC in order to improve understanding of the implementation process. METHODS Literature review on CoC implementation and NPT development and use, combined with immersion in the implementation of CoC context. RESULTS AND DISCUSSION A conceptual framework for the implementation of CoC is developed and individual components discussed, with a view to better understanding the implementation process for CoC models. The will of a critical mass of midwives to work in a CoC model and the provision and maintenance of the 'organisational space' required for CoC within the National Health Service (NHS) emerge as key barriers to mainstreaming CoC in the UK.
My Website: https://www.selleckchem.com/products/alpha-conotoxin-gi.html
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