Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing

ASR, Durom and Adept total resurfacing systems
make up the top five in 2007 and have all
declined in use since 2006 (Table HT12 and
Figure HT10).
Changes in use with Gender and Age
There are differences in gender and age between
primary conventional and total resurfacing hip
replacements. In 2007 primary conventional total
hip replacement was more common in females
(55.6%) than males (44.4%). Most primary
conventional total hip replacements are
undertaken on individuals 65 years or older
(64.6% in 2007) (Tables HT2 and HT4). The use
of primary total resurfacing procedures in
females declined from 28.8% of all total
resurfacing procedures in 2003 to 23.6% in 2007
(Table HT3). Most total resurfacing procedures
are undertaken in patients less than 65 years of
age (91.9% in 2007) (Table H5).
Fixation
There continues to be variation in the use of
cementless, hybrid and cemented conventional
primary total hip replacements by state/territory.
In recent years there has been a trend towards
increasing use of cementless hip prostheses but
this trend has slowed in 2007 (Figure HT2).
In 2007, 95.1% of total resurfacing procedures
used hybrid fixation, this has declined from
97.5% in 2003. Cementless fixation, although
uncommon has increased from 2.3% to 4.7%
over the same period. Cement fixation is rarely
used and accounted for only 0.2% of primary
total resurfacing procedures in 2007 (Figure
HT3).
Outcome of Primary Total Hip
Replacement
Total resurfacing hip replacement has a
significantly higher revision rate compared to
conventional total hip replacement (hazard ratio
(adjusted for sex and age) (Adj HR)= 1.42; 95%
CI (1.24, 1.63) p