Mayo researchers note that stronger leg muscles can protect against knee osteoarthritis
Stronger quadriceps muscles in the legs can help protect against cartilage loss behind the kneecap, according to Mayo Clinic researchers presenting preliminary study data at the American College of Rheumatology Annual Meeting on Nov. 15.
Knee osteoarthritis (OA) occurs when the cartilage that cushions the ends of the bones in the knee joint deteriorates over time. As this cushion wears down, the joint doesn't function as well and may be painful.
Mayo researchers, in collaboration with researchers from Boston University and the University of California, San Francisco, studied 265 men and women diagnosed with knee OA. They performed magnetic resonance images (MRIs) of participants' knee joints at the beginning of the study and again at 15 months and 30 months. Based on these MRIs, researchers determined how much cartilage loss occurred over time at the two joints of the knee: the tibiofemoral joint, where the thigh bone (femur) meets the lower leg bone (tibia); and the patellofemoral joint, behind the kneecap (patella).
When the study began, researchers also had measured the strength of participants' quadriceps muscles (leg muscles in the upper thigh). Analyzing these measurements, researchers observed that participants who had greater quadriceps strength had less cartilage loss within the lateral compartment of the patellofemoral joint, which is frequently affected by OA.
"A stronger quadriceps muscle helps keep the patella from moving laterally and tracking abnormally with movement," says Shreyasee Amin, M.D., Mayo rheumatologist and the study's lead researcher. "Our study results emphasize that it's important to encourage people with knee osteoarthritis to maintain strong quadriceps muscles as recommended by their physician."
Facts about osteoarthritis (OA)
The exact cause of OA isn't known. Researchers suspect a combination of factors, including being overweight, the aging process, joint injury or stress, heredity and muscle weakness. Pain is the major complication of OA. The degree of pain can vary greatly, from mild inconvenience to a debilitating condition that interferes with daily activities.
Sara Lee | EurekAlert!
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...