Is a hollow centralizer necessary when using a polished, tapered, cemented femoral stem? : A randomized, controlled RSA study of 60 hips with 10 years of follow-up
Background and purpose — A tapered, polished and collarless stem is normally equipped with a hollow centralizer to prevent the stem from becoming end-bearing in the cement as the stem subsides. In a randomized clinical trial, we evaluated such a stem (MS-30), which was initially introduced with a solid centralizer but was later recommended to be fitted with a hollow centralizer. We hypothesized th
