COPENHAGEN — A hip tribology study presented here
showed that in a series of 795 patients who underwent primary metal-on-metal
hip replacements between 1997 and 2009, those revised to a second or a third
hip arthroplasty had what investigators described as “disappointing”
post-revision functional outcomes.
According to James Beazley, MBChB, MRCS, a trauma and orthopaedic
registrar in the West Midlands, U.K., “this is one of the largest
series” of its kind, as it included 927 procedures with extended
Beazley, who presented the findings at the
12th EFORT Congress 2011, said women comprised two-thirds of
the 68 patients studied who required a revision procedure by 6 years
postoperatively, on average.
However, the overall average time to revision was 49
months following the index
resurfacing procedure. A loose cup, reported in 31% of
patients, was the main reason for the second surgeries.
Thirteen percent of patients had a second revision,
typically for infection or instability, Beazley said, noting that group had an
Oxford Hip Score of 34 points.
- Beazley J, Foguet P, Prakash U, et al. Functional outcome of
revised metal on metal hip resurfacing arthroplasty. Region: An analysis of
epidemiology and risk factors over 11 years. Paper #1088. Presented at the 12th
EFORT Congress 2011. June 1-4. Copenhagen.
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