87% Increase In Hip And Knee Replacements In Canada
"The number of hip and knee replacement surgeries is increasing at a faster rate than the population is aging," says Margaret Keresteci, CIHI's manager of Clinical Registries. The Canadian Joint Replacement Registry (CJRR) 2006 Annual Report on Hip and Knee Replacements in Canada found that even after accounting for population changes and aging, there was a 21% increase in the rate of hip replacements over 10 years (between 1994-1995 and 2004-2005) and an 81% increase in knee replacement rates during the same period.
Demographic trends
The report found the largest rate of increase in patients between the ages of 45 and 54. Hip replacements doubled in this age group over 10 years (from 1,313 in 1994-1995 to 2,664 in 2004-2005), while knee replacements nearly quadrupled (from 655 in 1994-1995 to 2,529 in 2004-2005). Older Canadians (age 65 and over) continue to make up the majority of joint replacement patients-representing 65% of hip replacement and 68% of knee replacement patients in 2004-2005. However, the number of older Canadians as a proportion of the total number of patients undergoing joint replacement surgery has decreased from 71% (1994-1995) to 66% (2004-2005) over 10 years, as more Canadians are getting joint replacements at a younger age.
"Some literature suggests that on average, hip and knee replacements last about 10 or 15 years, so younger patients who are getting surgery now may need to get revision surgery to correct or replace their artificial joints in a few years' time," says Keresteci." And as baby boomers move into their senior years, it is likely that demand for hip and knee replacements will continue to rise."
The obesity factor
CIHI's data show that people who are overweight or obese are more likely to require joint replacements in Canada. In 2004-2005, 9 out of 10 knee replacement patients were either overweight or obese, compared to nearly 8 out of 10 hip replacement patients.
The report found that, when compared to other age groups, those currently between the ages of 41 and 59 had the biggest proportion of obese patients for both hip (43%) and knee (68%) replacements in 2004-2005.
"There is an association between obesity and the increased risk of osteoarthritis, which is the most common diagnosis in joint replacement surgery," says Keresteci.
Other highlights from the report
In 1994-1995, the number of hip replacements exceeded the number of knee replacements in Canada (16,525 versus 14,938 surgeries, respectively). However, since then, knee replacements have annually surpassed the number of hip replacements, and the gap has been steadily widening.
In 2004-2005, doctors performed 33,590 knee replacements in Canada, more than double the number in 1994-1995 (an increase of 125%) and a 12.5% increase from the previous year. The number of hip replacements in 2004-2005 was 25,124, a 52% increase over 10 years and a 6% increase from the previous year.
Women received more total knee replacements than men in 2004-2005, making up 60% of patients. CIHI's report found the most dramatic increase in knee replacement surgery among women between the ages of 45 and 54. In 2004-2005, women in this age group received 1,624 knee replacements, an increase of 327% over 10 years.
Hospitalization rates
Joint replacement patients are spending less time in the hospital than they were 10 years ago. According to CIHI's report, the average length of stay for a hip replacement patient in 2004-2005 was 9 days, down from 14 days in 1994-1995. Similarly, the length of hospitalization for a knee replacement patient decreased from 12 to 7 days over the same period. With the exception of Yukon Territory and Nunavut, the majority of patients had their hip or knee procedures performed in their home province.
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Article adapted by Start Sanatate from original press release.
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Data sources
The data in this annual report come from two sources: CIHI's Hospital Morbidity Database and the Canadian Joint Replacement Registry (CJRR). The CJRR, managed by CIHI, provides comprehensive data on total hip and total knee replacements performed in Canada. Data are collected on a voluntary basis from patients, with the majority of patients participating. A pan-Canadian advisory committee, whose members include orthopaedic surgeons, consumers and representatives from the Canadian Orthopaedic Association, the Canadian Orthopaedic Foundation and the Arthritis Society, provides advice to CIHI on the registry's development and implementation. At present, 510 orthopaedic surgeons are participating in the registry.
Canadian Institute for Health Information
The Canadian Institute for Health Information (CIHI) collects and analyzes information on health and health care in Canada and makes it publicly available. Canada's federal, provincial and territorial governments created CIHI as a not-for-profit, independent organization dedicated to forging a common approach to Canadian health information. CIHI's goal: to provide timely, accurate and comparable information. CIHI's data and reports inform health policies, support the effective delivery of health services and raise awareness among Canadians of the factors that contribute to good health.
The report is available from CIHI's website.
87% creºtere în Hip ªi Knee Înlocuitorul În Canada - 87% Increase In Hip And Knee Replacements In Canada - articole medicale engleza - startsanatate