The Polished MS-30 Stem with a Solid Centralizer: A Minimum 10-year Review of Radiological and Clinical Outcomes

Abstract

Background/Purpose MS-30 is a triple tapered cemented femoral stem. Before 2005, it was used together with a solid centralizer. We wanted to investigate its effect on the migration behaviour and survivorship of polished stem with a minimum of 10 years. Methods Twenty-seven hips in 26 patients were available for follow-up. The mean length of follow-up was 12.1 years. Clinical outcomes were documented with the Harris Hip Score. Radiographs were examined for evidence of aseptic loosening. Results The average Harris Hip Score was 74.8. No stem was revised for aseptic loosening. Two stems (7.4%) developed radiolucent lines of more than 2 mm width with osteolysis. The mean subsidence was 0.77 mm. The survival rate at the 10th postoperative year, with aseptic loosening as the end point, was 100%. Conclusion The polished MS-30 stem with a solid centralizer has a satisfactory long-term outcome. Its mean subsidence was less than that of other polished tapered stems reported in the literature.