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Total Joint Replacement Educational Series Part 6: Surprising Statistics About Knee and Hip Replacement Surgery

Posted Oct 10 2008 2:12pm

  (from  The Journal of Bone & Joint Surgery, Volume 89-A, Number 12, December 2007)

·            The upward trends in the utilization of total hip and knee replacement between 1969 and 2003 detail the national need for these procedures.

·            The age and gender-adjusted incidence per 100,000 person-years significantly increased from 1971 to 2003, representing a greater than 400% increase in the incidence of total knee replacement (as compared with a 55% increase in total hip replacement during the same period).

·           There was a significantly higher utilization rate for women.

·            The incidence increased with the patient's age for total knee replacement, except in patients more than eighty years old.

·           The largest percentage increase was in patients less than fifty years old.

·            There was a significant increase in the proportion of total knee replacements performed for the treatment of osteoarthritis, from 51% during 1971-1975 to 92% in 2000- 2003.

·            This also reflects a reduction in the incidence of total knee replacements performed for the treatment of rheumatoid arthritis over the same period.

·            It is projected that the number of primary total knee replacements will increase from 450,400 to 3.48 million by 2030, compared with a growth in the number of primary total hip replacements from 208,600 to 572,100 during the same interval.

·            The volume of revision total hip replacements is projected to grow from 40,800 in 2005 to 96,700 in 2030 ( a 137% increase ).

·            The volume of revision total knee replacements is projected to grow from 38,300 in 2005 to 268, 200 in 2030 ( a 600% increase ).

·            The continued and rapid growth of utilization of total knee replacement reflects a trend that will require additional resources in the future.

·            This dramatically increased demand for replacement procedures will require additional discussions regarding the distribution of economic resources; the allocation of surgeons, facilities and resources; and improved operative efficiency.

·            Additionally, given the growth in the number of procedures in the younger, more active patients, implant longevity will require further enhancement.

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