Minimum Ten-Year Outcome of a Triple-Tapered Femoral Stem Implanted With Line-To-Line Cementing Technique

Abstract

Background A triple-tapered polished femoral stem was implanted with line-to-line cementing technique. The purpose of this study was to determine the survivorship, loosening rate, stem subsidence, radiologic changes and clinical outcomes in the minimum ten-year follow-up. Methods This was a retrospective study done in three institutes. Finally, 118 hips in 97 patients could be followed-up at the mean follow-up period of 126.9 months. The survivorship, radiological and clinical outcomes were investigated. Results Radiologically, 107 hips (90.7%) were categorized to Barrack cementing grade A, and 108 stems (91.5%) were inserted in neutral position. All hips were not loose and were not revised due to aseptic loosening. Survival with revision for any reason as the endpoint was 100% after 10 years. At the last follow-up, the mean subsidence was 0.41 mm, and the subsidence was less than 1 mm in 110 hips (93.2%). JOA hip score improved from 42.7 ± 9.2 points preoperatively to 92.9 ± 6.8 points at the last follow-up. No patient complained thigh pain. Conclusions Line-to-line cementing technique with use of a triple-tapered polished stem was effective to achieve good cementation quality and centralization of the stem. The subsidence was small, and the minimum ten-year results were excellent without any failures related to the stem.Trial registration: Retrospectively registered