Mid-term clinical and radiographic outcomes after primary total hip replacement with fully hydroxyapatite-coated stem: A cross-sectional study

Background: The number of total hip arthroplasties increases every year as the population ages. The purpose of the study was to evaluate mid-term clinical and radiological results for a minimum of two years and the survival rate at the 5-year follow-up period using a fully hydroxyapatite (HA)-coated stem. Methods: A single-center retrospective observational study was conducted, in which 121 primary total hip arthroplasties (THA) were performed between 2013 and 2015 using a standard offset Corail fully HA-coated stem. The study included 108 patients, with a median age among all patients of 55.00 years (range 18.0–79.0 years). The median follow-up time was 4 years and 9 months. Results: Stem survival for any reason was 98.4% at 5 years. The mean Harris Hip Score and Engh Grading Scale before surgery and at the follow-up visit show statistically significant improvement, accordingly (44.70 vs 98.13; p < 0.001) and (17.42 vs 19.68; p < 0.01). There is no statistically significant correlation between radiological and clinical results and no correlation between follow-up time and results. Conclusions: A completely coated hydroxyapatite standard offset Corail stem shows an excellent survival rate for a 5-year follow-up. Although the radiological results are not perfect, the clinical evaluation shows that the patients are satisfied and are not limited in their daily activities as before the surgery.