A prospective randomised radiostereometric analysis trial of SmartSet HV and Palacos R bone cements in primary total hip arthroplasty

Otto S Husby,Pål Benum,Olav A Foss,Kristin Haugan

doi:10.1007/s10195-010-0087-x

Otto S Husby, Pål Benum + Show 2 more

Open Access

https://doi.org/10.1007/s10195-010-0087-x

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Abstract

BackgroundIntroduction of new bone cements into clinical practice should include radiostereometric studies.Materials and methodsA prospective randomised radiostereometric study was performed, comparing SmartSet HV and Palacos R acrylic bone cements (without antibiotics) using third-generation cementing techniques in primary total hip arthroplasty. Thirty-five patients (36 hips) undergoing Charnley total hip arthroplasty were randomised to receive either of the two cements and were followed with repeated clinical, radiographic and radiostereometric examinations over 24 months. Twenty-seven patients (28 hips) attended 2 years postoperatively.ResultsThe mean distal translation observed was −0.15 mm for SmartSet HV and −0.16 mm for Palacos R. The mean rotation around the longitudinal axis was 0.9° for SmartSet HV and 1.2° for Palacos R. The Merle d’Aubigne Postel score was the maximum of 18 points for all patients in both groups.ConclusionsNo statistically significant difference in stem fixation with use of SmartSet HV and Palacos R was found at 2-year follow-up.

Highlights

Many factors influence the long-term performance of cemented total hip replacement (THR) such as patient characteristics, the prosthetic components, bone cements and surgical techniques [1].Increased prosthetic migration has been correlated with early loosening [2, 3]
Thirty-five patients (36 hips) undergoing Charnley total hip arthroplasty were randomised to receive either of the two cements and were followed with repeated clinical, radiographic and radiostereometric examinations over 24 months
No statistically significant difference in stem fixation with use of SmartSet HV and Palacos R was found at 2-year follow-up

Summary

Introduction

Many factors influence the long-term performance of cemented total hip replacement (THR) such as patient characteristics, the prosthetic components, bone cements and surgical techniques [1]. Increased prosthetic migration has been correlated with early loosening [2, 3] This was clearly demonstrated when using Boneloc cement (Biomet, Warsaw, Indiana). This low-viscosity cement was found to be catastrophic based on a randomised clinical study using radiostereometric analysis (RSA) [4] and 5 years of data from the Norwegian Arthroplasty Register [5]. Materials and methods A prospective randomised radiostereometric study was performed, comparing SmartSet HV and Palacos R acrylic bone cements (without antibiotics) using third-generation cementing techniques in primary total hip arthroplasty.

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