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Overweight
men at risk of Osteoarthritis of both hip
and knee
Newswise — Men who are overweight or obese
are much more likely need a hip replacement
for osteoarthritis than men who are of
normal weight, finds research published
online ahead of print in Annals of Rheumatic
Diseases.
People who are overweight are known to be
more likely to get osteoarthritis of the
knee, but this is the first study to show
that being overweight is a risk factor for
hip osteoarthritis in men but not women.
Researchers compared the body mass indexes
of 1,473 Icelandic people who had undergone
hip or knee replacement with those of 1,103
people who had not had joint replacement
surgery. All were born between 1910 and
1939.
They found women who were overweight
(BMI>25) were no more likely to have had a
hip replacement than women of normal weight,
but men were. Men who were obese (BMI>30)
were 70 per cent more likely to have had hip
replacement surgery.
People of both sexes who were overweight
were much more likely to have had knee
replacement surgery and the more overweight
they were the more likely it was. Men who
were obese were five times more likely to
have had a replacement knee and women four
times more likely.
The authors say: “The study supports a
positive association between high BMI and
total knee replacement in both sexes, but
for total hip replacement the association
with BMI seems to be weaker, and possibly
negligible for women.”
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