Lifestyle
Knee problems tend to flare up as you age – an orthopedic specialist explains available treatment options
Angie Brown, Quinnipiac University
Knee injuries are common in athletes, accounting for 41% of all athletic injuries. But knee injuries aren’t limited to competitive athletes. In our everyday lives, an accident or a quick movement in the wrong direction can injure the knee and require medical treatment. A quarter of the adult population worldwide experiences knee pain each year
As a physical therapist and board-certified orthopedic specialist, I help patients of all ages with knee injuries and degenerative conditions.
Your knees have a huge impact on your mobility and overall quality of life, so it’s important to prevent knee problems whenever possible and address pain in these joints with appropriate treatments.
Healthy knees
The knee joint bones consist of the femur, tibia and patella. As in all healthy joints, smooth cartilage covers the surfaces of the bones, forming the joints and allowing for controlled movement.
Muscles, ligaments and tendons further support the knee joint. The anterior cruciate ligament, commonly known as the ACL, and posterior cruciate ligament, or PCL, provide internal stability to the knee. In addition, two tough pieces of fibrocartilage, called menisci, lie inside the joint, providing further stability and shock absorption.
All these structures work together to enable the knee to move smoothly and painlessly throughout everyday movement, whether bending to pick up the family cat or going for a run.
Causes of knee pain
Two major causes of knee pain are acute injury and osteoarthritis.
Ligaments such as the ACL and PCL can be stressed and torn when a shear force occurs between the femur and tibia. ACL injuries often occur when athletes land awkwardly on the knee or quickly pivot on a planted foot. Depending on the severity of the injury, these patients may undergo physical therapy, or they may require surgery for repair or replacement.
PCL injuries are less common. They occur when the tibia experiences a posterior or backward force. This type of injury is common in car accidents when the knee hits the dashboard, or when patients fall forward when walking up stairs.
The menisci can also experience degeneration and tearing from shear and rotary forces, especially during weight-bearing activities. These types of injuries often require rehabilitation through physical therapy or surgery.
Knee pain can also result from injury or overuse of the muscles and tendons surrounding the knee, including the quadriceps, hamstrings and patella tendon.
Both injuries to and overuse of the knee can lead to degenerative changes in the joint surfaces, known as osteoarthritis. Osteoarthritis is a progressive disease that can lead to pain, swelling and stiffness. This disease affects the knees of over 300 million people worldwide, most often those 50 years of age and up. American adults have a 40% chance of developing osteoarthritis that affects their daily lives, with the knee being the most commonly affected joint.
Age is also a factor in knee pain. The structure and function of your joints change as you age. Cartilage starts to break down, your body produces less synovial fluid to lubricate your joints, and muscle strength and flexibility decrease. This can lead to painful, restricted movement in the joint.
Risk factors for knee problems
There are some risk factors for knee osteoarthritis that you cannot control, such as genetics, age, sex and your history of prior injuries.
Fortunately, there are several risk factors you can control that can predispose you to knee pain and osteoarthritis specifically. The first is excessive weight. Based on studies between 2017 and 2020, nearly 42% of all adult Americans are obese. This obesity is a significant risk factor for diabetes and osteoarthritis and can also play a role in other knee injuries.
A lack of physical activity is another risk, with 1 in 5 U.S. adults reporting that they’re inactive outside of work duties. This can result in less muscular support for the knee and more pressure on the joint itself.
An inflammatory diet also adds to the risk of knee pain from osteoarthritis. Research shows that the average American diet, often high in sugar and fat and low in fiber, can lead to changes to the gut microbiome that contribute to osteoarthritis pain and inflammation.
Preventing knee pain
Increasing physical activity is one of the key elements to preventing knee pain. Often physical therapy intervention for patients with knee osteoarthritis focuses on strengthening the knee to decrease pain and support the joint during movement.
The U.S. Department of Health and Human Services recommends that adults spend at least 150 to 300 minutes per week on moderate-intensity, or 75 to 150 minutes per week on vigorous-intensity aerobic physical activity. These guidelines do not change for adults who already have osteoarthritis, although their exercise may require less weight-bearing activities, such as swimming, biking or walking.
The agency also recommends that all adults do some form of resistance training at least two or more days a week. Adults with knee osteoarthritis particularly benefit from quadriceps-strengthening exercises, such as straight leg raises.
Treatments for knee pain
Conservative treatment of knee pain includes anti-inflammatory and pain medications and physical therapy.
Medical treatment for knee osteoarthritis may include cortisone injections to decrease inflammation or hyaluronic acid injections, which help lubricate the joint. The relief from these interventions is often temporary, as they do not stop the progression of the disease. But they can delay the need for surgery by one to three years on average, depending on the number of injections.
Physical therapy is generally a longer-lasting treatment option for knee pain. Physical therapy treatment leads to more sustained pain reduction and functional improvements when compared with cortisone injections treatment and some meniscal repairs.
Surgical interventions for knee pain include the repair, replacement or removal of the ACL, PCL, menisci or cartilage. When more conservative approaches fail, patients with osteoarthritis may benefit from a partial or total knee replacement to allow more pain-free movement. In these procedures, one or both sides of the knee joint are replaced by either plastic or metal components. Afterward, patients attend physical therapy to aid in the return of range of motion.
Although there are risks with any surgery, most patients who undergo knee replacement benefit from decreased pain and increased function, with 90% of all replacements lasting more than 15 years. But not all patients are candidates for such surgeries, as a successful outcome depends on the patient’s overall health and well-being.
New treatments on the horizon
New developments for knee osteoarthritis are focused on less invasive therapies. Recently, the U.S. Food and Drug Administration approved a new implant that acts as a shock absorber. This requires a much simpler procedure than a total knee replacement.
Other promising interventions include knee embolization, a procedure in which tiny particles are injected into the arteries near the knee to decrease blood flow to the area and reduce inflammation near the joint. Researchers are also looking into injectable solutions derived from human bodies, such as plasma-rich protein and fat cells, to decrease inflammation and pain from osteoarthritis. Human stem cells and their growth factors also show potential in treating knee osteoarthritis by potentially improving muscle atrophy and repairing cartilage.
Further research is needed on these novel interventions. However, any intervention that holds promise to stop or delay osteoarthritis is certainly encouraging for the millions of people afflicted with this disease.
Angie Brown, Clinical Associate Professor of Physical Therapy, Quinnipiac University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.
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In a significant health alert, the U.S. Food and Drug Administration (FDA) has upgraded the recall of Costco’s Kirkland Signature Smoked Salmon to a Class I designation, indicating a serious health risk. This recall follows the discovery of Listeria monocytogenes during routine laboratory testing.
Originally announced in late October, the recall involved 111 cases of smoked salmon packaged in twin 12-ounce units, with a UPC number of 0 96619 25697 6 and a lot number of 8512801270. The affected products have a best-by date of November 13, 2024, and were distributed between October 9 and October 13, 2024, specifically to Costco locations in Florida.
Listeria monocytogenes is known to cause listeriosis, a severe infection that can result in serious health complications or even death, especially among vulnerable populations such as pregnant individuals, the elderly, and those with weakened immune systems. Although no illnesses have been reported in connection with this product, consumers are advised to check their freezers for these recalled items.
Costco is urging customers who purchased this product to return it for a full refund.
For your safety, the FDA reminds consumers that Listeria can be found in a variety of foods, particularly raw or smoked seafood, unpasteurized dairy products, and deli meats. If you suspect you may have consumed contaminated food, please consult with a healthcare professional.
Stay safe and informed by regularly checking for updates on food recalls from reliable sources.
Related links:
The FDA Issued a Class I Recall on Costco’s Kirkland Signature Smoked Salmon https://www.foodandwine.com/costco-kirkland-signature-smoked-salmon-class-i-recall-listeria-monocytogenes-8780336
https://www.fda.gov/food/foodborne-pathogens/listeria-listeriosis
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Lifestyle
Newsweek Names Delta Dental of California One of America’s Greatest Workplaces for Diversity 2025
Annual ranking recognizes companies fostering inclusion and championing diversity based on anonymous employee feedback, public data, and third-party research.
SAN FRANCISCO /PRNewswire/ — Delta Dental of California and Affiliates, the leading dental insurance provider, has been recognized by Newsweek as one of America’s Greatest Workplaces for Diversity in 2025. This distinguished award is presented by Newsweek and Plant-A Insights Group to recognize U.S. companies across industries that prioritize fostering diversity and inclusive workplace cultures.
“Our people are our greatest asset,” said Brian Sherman, executive vice president and chief people officer of Delta Dental of California and Affiliates. “This recognition reflects our deep commitment to Diversity, Equity, and Inclusion programs that support and celebrate the unique perspectives and contributions of our employees.”
America’s Greatest Workplaces for Diversity is an annual ranking determined by a rigorous evaluation of public data, HR insights, and anonymous employee surveys. The list honors organizations with over 1,000 employees that demonstrate a meaningful commitment to offering distinctive company cultures inclusive of backgrounds and demographics, including age group, race, cultures, and sexual orientations. Research suggests about 80 percent of U.S. workers believe it’s important for companies to create inclusive cultures.
“As companies in the United States continue to navigate the evolving dynamics of the workplace, diversity remains a cornerstone of organizational success and social responsibility,” said Nancy Cooper, global editor in chief of Newsweek. “Newsweek and market-data research firm Plant-A Insights are proud to introduce ‘America’s Greatest Workplaces for Diversity 2025,’ highlighting companies committed to building inclusive workplaces.”
Delta Dental of California received a rating of 4.5 out of 5 stars for its Diversity, Equity and Inclusion practices in 2024. The company has also been recognized with other Newsweek accolades, including America’s Greatest Workplaces 2023, America’s Greatest Workplaces for Diversity 2023, and Americas Greatest Workplaces for Parents and Families 2023.
Delta Dental is committed to providing consistent, quality access to oral health care, improving education and driving lasting policy changes to address systemic issues. To learn more about what makes Delta Dental of California and Affiliates one of the best employers in the U.S., visit our career page.
About Delta Dental of California and Affiliates
Since 1955, Delta Dental of California and Affiliates has offered comprehensive, high-quality oral health care coverage to millions of enrollees and built the strongest network of dental providers in the country. The Delta Dental of California enterprise includes its affiliates Delta Dental Insurance Company, Delta Dental of Pennsylvania, Delta Dental of New York, Inc., as well as the national DeltaCare USA network, and provides dental benefits to more than 31 million people across 15 states and the District of Columbia.* All are members of the Delta Dental Plans Association based in Chicago, Illinois, the not-for-profit national association that through a national network of Delta Dental companies collectively covers millions of people nationwide. Delta Dental is a registered trademark of Delta Dental Plans Association.
For more information about Delta Dental of California and Affiliates, please visit www.deltadentalins.com
*Delta Dental of California and Affiliates’ operating areas encompass Alabama, California, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, Montana, Nevada, New York, Pennsylvania, Texas, Utah, West Virginia and the District of Columbia, as well as Puerto Rico and the Virgin Islands.
SOURCE Delta Dental of California
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Lifestyle
Biden helped bring science out of the lab and into the community − emphasizing research focused on solutions
Arthur Daemmrich, Arizona State University
President Joe Biden was inaugurated in January 2021 amid a devastating pandemic, with over 24 million COVID-19 cases and more than 400,000 deaths in the U.S. recorded at that point.
Operation Warp Speed, initiated by the Trump administration in May 2020, meant an effective vaccine was becoming available. Biden quickly announced a plan to immunize 100 million Americans over the next three months. By the end of April 2021, 145 million Americans – nearly half the population – had received one vaccine dose, and 103 million were considered fully vaccinated. Science and technology policymakers celebrated this coordination across science, industry and government to address a real-world crisis as a 21st-century Manhattan Project.
From my perspective as a scholar of science and technology policy, Biden’s legacy includes structural, institutional and practical changes to how science is conducted. Building on approaches developed over the course of many years, the administration elevated the status of science in the government and fostered community participation in research.
Raising science’s profile in government
The U.S. has no single ministry of science and technology. Instead, agencies and offices across the executive branch carry out scientific research at several national labs and fund research by other institutions. By elevating the White House Office of Science and Technology Policy to a Cabinet-level organization for the first time in its history, Biden gave the agency greater influence in federal decision-making and coordination.
Formally established in 1976, the agency provides the president and senior staff with scientific and technical advice, bringing science to bear on executive policies. Biden’s inclusion of the agency’s director in his Cabinet was a strong signal about the elevated role science and technology would play in the administration’s solutions to major societal challenges.
Under Biden, the Office of Science and Technology Policy established guidelines that agencies across the government would follow as they implemented major legislation. This included developing technologies that remove carbon dioxide from the atmosphere to address climate change, rebuilding America’s chip industry, and managing the rollout of AI technologies.
Instead of treating the ethical and societal dimensions of scientific and technological change as separate from research and development, the agency advocated for a more integrated approach. This was reflected in the appointment of social scientist Alondra Nelson as the agency’s first deputy director for science and society, and science policy expert Kei Koizumi as principal deputy director for policy. Ethical and societal considerations were added as evaluation criteria for grants. And initiatives such as the AI bill of rights and frameworks for research integrity and open science further encouraged all federal agencies to consider the social effects of their research.
The Office of Science and Technology Policy also introduced new ways for agencies to consult with communities, including Native Nations, rural Americans and people of color, in order to avoid known biases in science and technology research. For example, the agency issued government-wide guidance to recognize and include Indigenous knowledge in federal programs. Agencies such as the Department of Energy have incorporated public perspectives while rolling out atmospheric carbon dioxide removal technologies and building new hydrogen hubs.
Use-inspired research
A long-standing criticism of U.S. science funding is that it often fails to answer questions of societal importance. Members of Congress and policy analysts have argued that funded projects instead overly emphasize basic research in areas that advance the careers of researchers.
In response, the Biden administration established the technology, innovation and partnerships directorate at the National Science Foundation in March 2022.
The directorate uses social science approaches to help focus scientific research and technology on their potential uses and effects on society. For example, engineers developing future energy technologies could start by consulting with the community about local needs and opportunities, rather than pitching their preferred solution after years of laboratory work. Genetic researchers could share both knowledge and financial benefits with the communities that provided the researchers with data.
Fundamentally, “use-inspired” research aims to reconnect scientists and engineers with the people and communities their work ultimately affects, going beyond publication in a journal accessible only to academics.
The technology, innovation and partnerships directorate established initiatives to support regional projects and multidisciplinary partnerships bringing together researchers, entrepreneurs and community organizations. These programs, such as the regional innovation engines and convergence accelerator, seek to balance the traditional process of grant proposals written and evaluated by academics with broader societal demand for affordable health and environmental solutions. This work is particularly key to parts of the country that have not yet seen visible gains from decades of federally sponsored research, such as regions encompassing western North Carolina, northern South Carolina, eastern Tennessee and southwest Virginia.
Community-based scientific research
The Biden administration also worked to involve communities in science not just as research consultants but also as active participants.
Scientific research and technology-based innovation are often considered the exclusive domain of experts from elite universities or national labs. Yet, many communities are eager to conduct research, and they have insights to contribute. There is a decades-long history of citizen science initiatives, such as birdwatchers contributing data to national environmental surveys and community groups collecting industrial emissions data that officials can use to make regulations more cost effective.
Going further, the Biden administration carried out experiments to create research projects in a way that involved community members, local colleges and federal agencies as more equal partners.
For example, the Justice40 initiative asked people from across the country, including rural and small-town Americans, to identify local environmental justice issues and potential solutions.
The National Institutes of Health’s ComPASS program funded community organizations to test and scale successful health interventions, such as identifying pregnant women with complex medical needs and connecting them to specialized care.
And the National Science Foundation’s Civic Innovation Challenge required academic researchers to work with local organizations to address local concerns, improving the community’s technical skills and knowledge.
Frontiers of science and technology policy
Researchers often cite the 1945 report Science: The Endless Frontier, written by former Office of Scientific Research and Development head Vannevar Bush, to describe the core rationales for using American taxpayer money to fund basic science. Under this model, funding science would lead to three key outcomes: a secure national defense, improved health, and economic prosperity. The report, however, says little about how to go from basic science to desired societal outcomes. It also makes no mention of scientists sharing responsibility for the direction and impact of their work.
The 80th anniversary of Bush’s report in 2025 offers an opportunity to move science out into society. At present, major government initiatives are following a technology push model that focuses efforts on only one or a few products and involves little consideration of consumer and market demand. Research has repeatedly demonstrated that consumer or societal pull, which attracts development of products that enhance quality of life, is key to successful uptake of new technologies and their longevity.
Future administrations can further advance science and address major societal challenges by considering how ready society is to take up new technologies and increasing collaboration between government and civil society.
Arthur Daemmrich, Professor of Practice in the School for the Future of Innovation in Society, Arizona State University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/
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