ReCap™ Total Resurfacing System
13. Femoral Head Trial
The appropriately sized femoral head trial is
positioned on the freshly prepared femoral head
to check the fit of the implant and if necessary to
perform a trial reduction. (Figure 30). It is possible,
when necessary, to remove additional bone from the
top of the femoral head. To carry out this procedure
the standard guide rod must first be replaced into
the drilled hole and the last spherical reamer used is
positioned over the guide rod. The spherical reamer
is then advanced over the guide rod until the desired
amount of bone is removed.
Figure 30
It is important to remember that the guide rod
stop mechanism may no longer be used.
The windows in the trial head permit visualisation of
component coverage. It is recommended to mark the
margin of the trial at this time, as this will help when
seating the implant in position.
14. Final Preparation of Femoral Head
Prior to cementing the ReCap
®
resurfacing
component in position, the femoral head must
undergo final preparation. First, any cysts or defects
must be removed, as these will negatively affect the
longevity of the resurfacing component. Secondly,
the femoral head surface is drilled with keyholes that
aid cement interdigitation. Lastly, the femoral head
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must be thoroughly washed using pulse lavage and
then dried. (Figure 31)
Figure 31
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