Decreased rates of subsidence with a specific modular, fluted, tapered femoral revision stem

Studies have noted high rates of subsidence >5mm in modular, fluted, tapered (MFT) stems used in femoral revision. These rates may be high due to evaluation of all MFT stems as a group; we present improved subsidence data using a single stem. We reviewed revision hip arthroplasty cases using the DePuy RECLAIM MFT stem. Postoperative radiographs were compared with most recent follow-up radiographs to measure subsidence. 124 patients were reviewed. 10 were lost to follow-up, and one was excluded for surgical error, leaving 113 patients. Average subsidence was 0.44mm, range 0-4.20mm. Average subsidence in female and male populations were 0.40mm and 0.49mm, respectively; the difference was not significant. There were no reoperations. The subsidence data for MFT stems presented in the literature is higher than our experience. This difference may be attributable to implant design, and future studies may benefit from stratification by manufacturer.