Publications by authors named "Harris I"

Background: The financial and resource burden of management of olecranon fractures in the elderly is likely to increase with an aging population. There is limited evidence guiding treatment choice in this cohort. This study aimed to determine whether operative treatment of displaced olecranon fractures in elderly patients provides superior 12-month functional outcomes compared to nonoperative treatment.

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Article Synopsis
  • Delirium is a common complication for older adults after hip fracture surgery, with a study analyzing patient data from 2015-2020 revealing inconsistent links between the type of anaesthesia used and the occurrence of delirium.
  • Among the 35,252 patients studied, those who received general anaesthesia (40.6%) showed higher rates of delirium compared to those who received spinal or regional anaesthesia (35.7%).
  • Adjustments for known confounders indicated a weak association between general anaesthesia and delirium, but an analysis addressing unmeasured factors found no significant causal link, suggesting more research is needed in this area.
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Background: Amino acids are critical to tumor survival. Tumors can acquire amino acids from the surrounding microenvironment, including the serum. Limiting dietary amino acids is suggested to influence their serum levels.

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Background: Orthopaedic surgeon engagement with patient-reported outcome measures (PROMs) data has not been comprehensively evaluated, despite increasing uptake of orthopaedic PROMs programmes globally. The aim of this review was to systematically identify, appraise and synthesise qualitative evidence on barriers and facilitators to orthopaedic surgeons' engagement with PROMs data and their use of these data to support clinical practice.

Methods: Six databases (MEDLINE, EMBASE, COCHRANE CENTRAL, PSYCINFO, CINAHL and EMCARE) were searched from January 2000-March 2024 to identify potentially eligible qualitative studies.

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Background: Given growing demand for hip and knee arthroplasty and unsustainable resource requirements, safe and efficient models of care are critical. This study aims to determine the impact on healthcare costs of implementing an enhanced short-stay model of care (ESS-MOC) for arthroplasty at a national level.

Methods: A budget impact analysis was conducted for the years 2023-2030 in the setting of Australian publicly and privately funded hospitals performing hip or knee arthroplasty.

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Aims: Systematic reviews of randomized controlled trials (RCTs) are the highest level of evidence used to inform patient care. However, it has been suggested that the quality of randomization in RCTs in orthopaedic surgery may be low. This study aims to describe the quality of randomization in trials included in systematic reviews in orthopaedic surgery.

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Objective: To ascertain the barriers and facilitators to physical activity (PA) for older adults in Residential Aged Care Facilities (RACFs), from the perspective of residents, staff, and family.

Methods: A mixed-methods systematic review, underpinned by the Social Ecological Model (SEM). Five databases were searched from inception to May 2024.

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  • Evidence-based guidelines suggest that all older adults with hip fractures should receive oral nutrition supplements (ONS), but this study found that only 47.3% of hospitalized patients received them.
  • The research involved 385 older adults aged 65 and older from 29 hospitals across two countries, highlighting that ONS was more commonly given to those identified as malnourished and those lacking preoperative assessments.
  • The study concludes that a more structured approach is needed to ensure that all older adults, regardless of cognitive or nutritional status, receive ONS to improve recovery outcomes after hip fractures.
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The exotic polarization configurations of topologically protected dipolar textures have opened new avenues for realizing novel phenomena absent in traditional ferroelectric systems. While multiple recent studies have revealed a diverse array of emergent properties in such polar topologies, the details of their atomic and mesoscale structures remain incomplete. Through atomic- and meso-scale imaging techniques, the emergence of a macroscopic ferroelectric polarization along both principal axes of the vortex lattice while performing phase-field modeling to probe the atomic scale origins of these distinct polarization components is demonstrated.

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Background: Amino acids are critical to tumor survival. Tumors can acquire amino acids from the surrounding microenvironment, including the serum. Limiting dietary amino acids is suggested to influence their serum levels.

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Restricting amino acids from tumors is an emerging therapeutic strategy with significant promise. While typically considered an intracellular antioxidant with tumor-promoting capabilities, glutathione (GSH) is a tripeptide of cysteine, glutamate, and glycine that can be catabolized, yielding amino acids. The extent to which GSH-derived amino acids are essential to cancers is unclear.

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Importance: Structured education and exercise therapy programs have been proposed to reduce reliance on total knee replacement (TKR) surgery and improve health care sustainability. The long-term cost-effectiveness of these programs is unclear.

Objectives: To estimate the lifetime cost-effectiveness of implementing a national structured education and exercise therapy program for individuals with knee osteoarthritis with the option for future TKR compared with usual care (TKR for all).

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Objectives: To determine whether adherence to hip fracture clinical care quality indicators influences mortality among people who undergo surgery after hip fracture in New South Wales, both overall and by individual indicator.

Study Design: Retrospective population-based study; analysis of linked Australian and New Zealand Hip Fracture Registry (ANZHFR), hospital admissions, residential aged care, and deaths data.

Setting, Participants: People aged 50 years or older with hip fractures who underwent surgery in 21 New South Wales hospitals participating in the ANZHFR, 1 January 2015 - 31 December 2018.

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Background: The majority of junior doctors in the UK do not proceed directly into specialty training after completing mandatory foundation training but instead take a year out of training. A common post undertaken during a year out of training is a clinical teaching fellow (CTF) role which is used to provide undergraduate medical student teaching. There is only a small amount of literature available regarding CTF posts, and very little of this explores experiences or reasons for taking up such as post.

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Background: The influence of implant factors on patient-reported outcome measures (PROMS) after total knee arthroplasty (TKA) has previously been studied but findings are often inconsistent, restricted in scope and biased by confounding factors. This study aims to determine the association between implant-related factors and early post-operative PROMs after TKA.

Methods: Using data from the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR) PROMs program, the study included 9487 primary TKA procedures performed in 43 hospitals from July 31, 2018 to December 31, 2020.

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Unnecessary care, where the potential for harm exceeds the potential for benefit, is widespread in medical care. Orthopaedic surgery is no exception. This has significant implications for patient safety and health care expenditure.

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Article Synopsis
  • Cells depend on antioxidants like glutathione (GSH) for survival, with its production controlled by the enzyme GCLC.
  • GSH is crucial for maintaining lipid levels in the liver, a key site for lipid production, and its deficiency affects fat storage and triglyceride levels.
  • The study reveals that GSH influences lipid abundance by regulating the transcription factor NRF2, linking antioxidant function to lipid metabolism.
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Spin waves in magnetic materials are promising information carriers for future computing technologies due to their ultra-low energy dissipation and long coherence length. Antiferromagnets are strong candidate materials due, in part, to their stability to external fields and larger group velocities. Multiferroic antiferromagnets, such as BiFeO (BFO), have an additional degree of freedom stemming from magnetoelectric coupling, allowing for control of the magnetic structure, and thus spin waves, with the electric field.

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Antiferromagnets have attracted significant attention in the field of magnonics, as promising candidates for ultralow-energy carriers for information transfer for future computing. The role of crystalline orientation distribution on magnon transport has received very little attention. In multiferroics such as BiFeO the coupling between antiferromagnetic and polar order imposes yet another boundary condition on spin transport.

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The intestinal tract generates significant reactive oxygen species (ROS), but the role of T cell antioxidant mechanisms in maintaining intestinal homeostasis is poorly understood. We used T cell-specific ablation of the catalytic subunit of glutamate cysteine ligase (Gclc), which impaired glutathione (GSH) production, crucially reducing IL-22 production by Th17 cells in the lamina propria, which is critical for gut protection. Under steady-state conditions, Gclc deficiency did not alter cytokine secretion; however, C.

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: Obesity is linked to higher rates of complications; lower absolute recovery of mobility, pain, and function; and increased costs of care following total knee or hip arthroplasty (TKA, THA). The aim of this prospective cohort study was to evaluate the effectiveness of a 12-week partial meal replacement (PMR) weight loss program for people awaiting TKA or THA and living with obesity (body mass index (BMI) ≥ 30 kg/m). : The intervention was delivered remotely and included a 12-week PMR plan of 1200 calories/day, incorporating two meal replacement shakes/soups and a third suitable simple meal option.

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