SmartSet HV and Palacos R RSA Bone Cements in Primary Total Hip Arthroplasty

A Randomised Prospective Trial of SmartSet HV and Palacos R Bone Cements in Primary Total Hip Arthroplasty. A Radiostereometric Analysis of the Charnley Femoral Component.

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.

Husby OS, Haugan K, Benum P, Foss OA. A prospective randomised radiostereometric analysis trial of SmartSet HV and Palacos R bone cements in primary total hip arthroplasty. J Orthop Traumatol. 2010 Mar;11(1):29-35. doi: 10.1007/s10195-010-0087-x. Epub 2010 Mar 3.