Revision total hip arthroplasty with modular femoral stem—a retrospective study

Abstract

<p>Introduction: Modular femoral stems are one of the options for femoral revision. It offers flexibility to address offset, rotation and leg length discrepancy independent of each other. The purpose of the study is to analyse the clinical and radiological outcomes of using Restoration Modular Hip System in our institution.<br>Methodology: We retrospectively reviewed patients who had undergone revision THA using Restoration Modular Hip System during the period of December 2016-June 2022. Patients’ demographics (age, gender, indication), surgical factors (implant size and shape), clinical outcomes (Harris Hip Score [HHS], revision surgery) and radiological outcomes (subsidence, loosening) were reviewed.<br>Results: Twenty-four patients (25 hips, 16 males, 8 females) were reviewed in the study. The mean age at surgery was 71.4 years old. The mean follow-up period was 2.7 years. Surgical indications were periprosthetic joint infection (9 hips), periprosthetic fracture (7 hips), aseptic loosening (6 hips), failed hip fracture fixation (2 hips) and instability (1 hip). Twenty-four conical distal stems and one cylindrical distal stem were used. The median diameter of conical stem used was 16 mm (range 14-21 mm). The mean HHS improved from 48.34 points preoperatively to 76.26 points at the most recent follow-up. One patient required re-revision due to periprosthetic infection. No subsidence or loosening was identified.<br>Conclusion: The use of modular femoral stem in revision THR demonstrates favourable clinical and radiological outcomes in this cohort of patients<br></p>