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Proximal Femur Endoprosthesis Augmentation With Polymethylmethacrylate and Condylar Plate: Surgical Technique Description

Introduction: Aseptic loosening by mechanical failure is one of the main causes of proximal femur endoprosthesis failure with different clinical consequences such as pain, inflammation, progressive loosening of muscular volume, and strength with functional limitation. Materials and Methods: We present the surgical description of the case of a patient with aseptic loosening of proximal femur endoprosthesis that was treated with a novel technique that combines different methods to achieve primary stability. Discussion: Different surgical techniques have been described to treat aseptic loosening of femoral endoprosthesis, including bone allografts, and total femur prosthesis which provides good functional results but high rates of complications such as infection (13%), dislocation (6%), and material failure (3%). Results: Proximal femur endoprosthesis augmentation with polymethylmethacrylate and condylar plate is a novel surgical technique that allows primary stabilization of the construct, early rehabilitation, improvement of functionality, and no signs of new loosening in a follow-up period of 6 months.