Excess weight leads to arthritic knees
|PEOPLE who are
overweight are six times as likely to end up with arthritis in both of their knees than
normal weight individuals.
Obese people are at even greater risk - they are more than eight times as likely as their thinner counterparts to develop osteoarthritis in both knees, according to a report in the Journal of Clinical Epidemiology.
While research has suggested that obesity and osteoarthritis are linked. it has not been clear if this is due to strain that extra weight puts on the knee joints or some metabolic change within the body.
The new study suggests that osteoarthritis of the knee may be caused simply by carrying around too much weight, according to a team of researchers led by Dr. Til Sturmer of the University of Ulm in Germany. "Obesity seems to be a mechanical rather than a systemic risk factor for osteoarthritis with the knee joint being especially susceptible."
The researchers studied 809 patients under age 75 who underwent either knee or hip replacement due to osteoarthritis. Patients with a body mass index (BMI) of 25 are considered normal weight, those with a BMI between 25 and 30 overweight, and those with a BMI over 30 obese,
Compared with those of normal weight, obese patients were eight times more likely, and overweight patients almost six times more likely, to have arthritis in both knees, after factors such as age and smoking status were taken into account.
As reported in The Business Lines News Service