SmartSet HV and Palacos R RSA Bone Cements in Primary Total Hip Arthroplasty
SmartSet HV and Palacos R RSA Bone Cements in Primary Total Hip Arthroplasty
A randomised radiostereometric study comparing SmartSet HV and Palacos R acrylic bone
 cements.
The fixation of components in total hip arthroplasty has a significant effect on the
 long-term survival of the prostheses. Bone cement in total joint replacement acts as an
 anchoring medium for the prosthesis and provides a barrier to the ingress of wear debris into
 bone surfaces. However, there are significant differences in cement behaviour among differing
 types of cement. A clinical study based on the Norwegian Arthroplasty Register demonstrated
 that there is an increased rate of revision due to aseptic loosening of femoral components
 implanted with low-viscosity cement compared with that of high-viscosity.

 Studies have shown that high early migration for certain designs of femoral prosthesis can be
 a predictor for clinical loosening. RSA is a technique enabling calculation of the
 three-dimensional translational and rotational movements of the implant relative to the bone,
 and therefore provides an ideal technique to detect early micromotion of implants.
Inclusion Criteria:

 -  patients in need for total hip arthroplasty

 Exclusion Criteria:

 -  patients with an existing condition such as malignancy, pregnancy, severe osteoporosis
 and disabling musculoskeletal problems (other than in the hips),

 -  patients on corticosteroid treatment,

 -  patients who had already participated in a clinical study with an investigational
 product in the last 6 months.