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February 8, 2002
People who are severely overweight are up to three times more likely to need total hip replacement (THR) surgery in later life, reported a team of researchers from Norway. In addition, those who take part in high physical activity at work are twice as likely to develop surgery-demanding osteoarthritis (OA) of the hip.
Speaking at the Press Conference during, the annual congress of the European League Against Rheumatism (EULAR), Dr Gunnar Flugsrud presented data from a study which involved an analysis of Body Mass Index (BMI) and levels of physical activity in over 50,000 subjects.
BMI is the ratio of a person’s weight to height and is one of the commonly used measures of obesity. BMI values between 18.5 and 24.9 are considered normal or healthy, values between 25.0 and 29.9 as overweight and those of 30 or above as obese. People with BMI values less than 18.5 are considered to be underweight.
“We have found that women in the highest body mass index quarter [27 or above] had a relative risk of later total hip replacement that was three times higher than those in the lowest quarter. Men in the highest BMI quarter had twice the relative risk of total hip replacement,” explained Dr Flugsrud of Ulleval University Hospital, Oslo.
The large-scale study also confirmed that high physical activity at work increases the risk for total hip replacement-demanding osteoarthritis.
“Contrary to earlier findings, the effect was equally strong among women in our study population. Both women and men in the most active group were more than twice as likely to require THR than those in the least active group,” said Dr Flugsrud.
Commenting on the importance and relevance of these findings to patient care, Dr Flugsrud concluded by saying:
“Currently no cure exists for osteoarthritis other than surgery. It is therefore very important to identify preventable factors that play a role in the development of this debilitating and increasingly common disease. We hope that these, and other new data presented at EULAR, will be used to make informed decisions and to optimize the advice and care we give in order to prevent irreparable bone and joint damage.”
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