2023-12-05 12:00:06
Doing squats works the quadriceps muscles in particular. EUGENIO MARONGIU/CULTURA/PHOTONONSTOP
Ten thousand steps and more. Strengthening thigh muscles can delay knee surgery, shows work presented at the Radiological Society of North America (RSNA) meeting which was held at the end of November.
Dr. Upadhyay Bharadwaj of the University of California, San Francisco (UCSF) and colleagues examined thigh muscle volume in 134 participants from the US cohort Osteoarthritis Initiative (which includes approximately 4,000 patients with knee osteoarthritis, followed for several years with regular MRIs). They compared 67 patients who had undergone total knee arthroplasty (surgical repair of a joint) with 67 control participants who did not have a prosthesis. Researchers examined MRI scans of the thigh at the time of surgery and two and four years before surgery, using artificial intelligence tools.
Result : “Developing the quadriceps is significantly associated with lower risks of total knee replacement two to four years later. » This muscle, at the front of the thigh, is essential for locomotion and ambulation. “It is also a stabilizer of the patella. If we have weakness in this muscle, the kneecap will no longer slide well and this can be a source of pain and osteoarthritis”details Francis Berenbaum, head of the rheumatology department at Saint-Antoine hospital (AP-HP). Strengthening the hamstring muscles (at the back of the thigh) is also associated with a lower risk of intervention but to a lesser extent, according to these results. “It’s a great study that corroborates others”comments Francis Berenbaum.
Stair climbing, squats, chair raises…
Remember that osteoarthritis, the most widespread joint disease, affects around 10 million people (65% over 65 years old) in France, with knee joints frequently affected. We are talking about gonarthrosis. It can concern the femoro-tibial joint (between the femur and the tibia) or the femoro-patellar joint (between the femur and the kneecap). Its causes are multiple, with inactivity being an important risk factor.
“Linked to dysfunctions which involve all the components of the joint, it is characterized not by wear but by the damage to all the tissues of the joint: essentially synovial membrane, bone and cartilage”, develops Inserm. This leads to pain and stiffness, and sometimes inflammation. In some cases, “this causes a loss of mobility, also explaining an increase in cardiovascular mortality due to a sedentary lifestyle”specifies Francis Berenbaum.
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