Total Knee Arthroplasty Rehabilitation Case Report

Background & Purpose Total knee arthroplasties (TKAs) are the most commonly performed elective surgery in the United States. Osteoarthritis (OA) is the most common diagnosis treated with a TKA, which aims to restore an individual\u27s functional ability by improving joint biomechanics and decreasing pain. The purpose of this case report is to describe the progression of physical therapy rehabilitation for a patient status post total knee arthroplasty. Case Description The patient was a 64 year old male who underwent a TKA surgery to resolve the complications from severe osteoarthritis (OA) of his left knee. He presented to physical therapy with deficits in range of motion, strength, and functional activities. Outcomes The patient responded well to the physical therapy interventions, which included manual therapy, therapeutic exercise, and vasopneumatic treatment. He returned to his prior level of function and resumed independent exercise at the wellness center. Discussion The patient underwent rehabilitation following his TKA and achieved favorable outcomes. His results align with other research studies conducted for similar cases. Intervention procedures that can be utilized for TKA rehabilitation in the future include preoperative exercise and functional squatting symmetry

A history of high-power laser research and development in the United Kingdom

The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, academia, industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications. This historical review looks at the contribution the UK has made to the advancement of the technology, the development of systems and components and their exploitation over the last 60 years

Immune Subversion and Quorum-Sensing Shape the Variation in Infectious Dose among Bacterial Pathogens

Many studies have been devoted to understand the mechanisms used by pathogenic bacteria to exploit human hosts. These mechanisms are very diverse in the detail, but share commonalities whose quantification should enlighten the evolution of virulence from both a molecular and an ecological perspective. We mined the literature for experimental data on infectious dose of bacterial pathogens in humans (ID50) and also for traits with which ID50 might be associated. These compilations were checked and complemented with genome analyses. We observed that ID50 varies in a continuous way by over 10 orders of magnitude. Low ID50 values are very strongly associated with the capacity of the bacteria to kill professional phagocytes or to survive in the intracellular milieu of these cells. Inversely, high ID50 values are associated with motile and fast-growing bacteria that use quorum-sensing based regulation of virulence factors expression. Infectious dose is not associated with genome size and shows insignificant phylogenetic inertia, in line with frequent virulence shifts associated with the horizontal gene transfer of a small number of virulence factors. Contrary to previous proposals, infectious dose shows little dependence on contact-dependent secretion systems and on the natural route of exposure. When all variables are combined, immune subversion and quorum-sensing are sufficient to explain two thirds of the variance in infectious dose. Our results show the key role of immune subversion in effective human infection by small bacterial populations. They also suggest that cooperative processes might be important for successful infection by bacteria with high ID50. Our results suggest that trade-offs between selection for population growth-related traits and selection for the ability to subvert the immune system shape bacterial infectiousness. Understanding these trade-offs provides guidelines to study the evolution of virulence and in particular the micro-evolutionary paths of emerging pathogens

Opioid Management in the Dying Child With Addiction

The dramatic increases of opioid use and misuse in the past 15 years have resulted in a focus on the responsible and judicious use of opioids. In this Ethics Rounds, the commentators analyze the case of a 16-year-old girl with lymphoma and opioid misuse whose caregiver may have diverted her opioids. She is now at the end of life and prefers to die at home. The commentators, oncologists, palliative care providers, ethicists, and a medical student agree that supporting the patient\u27s goals and practicing good opioid stewardship are not incompatible. They identify additional information that would be required to analyze the case more fully such as the nature of the evidence for misuse and diversion and whether bias inadvertently contributed to these concerns. They agree that multimodal analgesia, including but not limited to opioids, is important. Safeguards could include a contract, directly observed therapy, and/or urine drug screens. Supervision or removal of a caregiver diverting medication or admission of the patient misusing medications would be alternatives if the initial plan was unsuccessful. Such patient-centered care requires well-developed substance misuse treatment, pain management, and home hospice that are adequately reimbursed