Five- to 12-Year Outcomes of a Short, Tapered, Highly Porous, Proximally Coated Cementless Femoral Stem

Background: Short cementless stems in total hip arthroplasty have gained increasing popularity, yet ongoing studies of many of these implants are lacking. The aim of this study was to evaluate the minimum 5 year clinical and radiological results of a short, highly porous, single-tapered-wedge cementless femoral implant. Methods: A retrospective study of 281 hips in 256 patients who had a minimum 5-year follow-up and underwent primary total hip arthroplasty between 2010 and 2016 were evaluated. Clinical and radiological results, complications, and the presence of postoperative thigh pain were evaluated. Results: The mean follow-up was 8 years (range, 5 to 12 years). Clinically, patients had significant improvement in the average patient-related outcome scores postoperatively (Harris hip score: pre 47 versus post 95, University of California Los Angeles activity scale: pre 4 versus post 6, Western Ontario and McMaster Universities Arthritis Index: pre 51 versus post 3, Short Form (SF)- 12 physical component summary : pre 32 versus post 52, Short Form-12 mental component summary: pre 49 versus post 55 (P <.001)). Radiographic signs of ingrowth were present in all hips. There were three patients (1.1%) who developed transient thigh pain postoperatively, all of which resolved with nonoperative management. Conclusion: This study provides the longest follow-up of this short, highly porous, single-tapered-wedge cementless femoral stem in the literature. This short, single-wedge stem with its highly porous coating demonstrated reproducible bone ingrowth in all patients and significant functional improvement with a very low rate of transient thigh pain. Crown Copyright (c) 2023 Published by Elsevier Inc. All rights reserved.