Short Term Results after Revision Total Hip Replacement with Distally Interlocked Modular Femoral Reconstruction Prosthesis

Objectives. Currently, no studies have been conducted in Latvia on early functional capacity findings in patients who underwent hip revision surgery with a distally-interlocked femoral prosthesis (REEF stem, DePuy Synthes) after a periprosthetic fracture. The aim of this study is to evaluate short-term clinical and radiological outcomes after revision of total hip arthroplasty with the current prosthesis.
Materials and Methods. The cross-sectional study included 17 patients who underwent revision hip joint surgery with REEF stem at the Hospital of Traumatology and Orthopaedics between 2017 and 2021, with 12 patients in the final analysis. The evaluation of the patient’s clinical condition was conducted during follow-up visits to the same hospital using the Harris Hip Score (HHS). Data were analyzed with IBM SPSS 28.0.1.1.
Results. In the study, 12 hip joints were analyzed, the mean age of the patients was 69.6 years, the mean body mass index (BMI) was 30.38 kg/m² (SD ± 7.64), and women predominated in our study population. The mean follow-up period was 3 years and 3 months (SD ± 41 months). The mean HHS before surgery was 23.50 points (SD ± 16.88) (range, 3-47), with 42% (n = 5) of the patients showing fair to excellent scores, according to HHS. The mean HHS at the follow-up visit was 63.67 points (SD ± 23.22) (range, 40-100), with the lowest scores for the ability to get in public transport the worst and the highest – the ability to sit for long periods. Statistically significant preoperative and postoperative HHS differences were found t(11) = -5.53, p < 0.01) with a large effect size (g = 1.49). No statistically significant correlation was found between HSS at the follow-up visit and the BMI (r = 0.53; p = 0.770) and follow-up period (r = -0.123; p = 0.704).
Conclusions. Although the study population is small, the short-term results after hip revision surgery with REEF stem already show significant improvement (p < 0.01) in surgery outcomes, with several excellent results.