Resumo

BOCHATEY, Eduardo J  e  LOPREITE, Fernando A. Resultados a corto plazo de la artroplastia total de cadera con tallos femorales de fijación metafisaria de segunda generación. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2020, vol.85, n.3, pp.214-221. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2020.85.3.1021.

Introduction: The high number of total hip arthroplasties (THAs) currently being performed in young patients warrants a thorough understanding of THA survivorship. Femoral component stability and resistance to subsidence are critical factors to achieve correct osseointegration, and the subsequent clinical success, in uncemented THAs. Materials and Methods: We conducted an observational, descriptive, retrospective study on all patients who underwent primary total hip replacement performed by our surgical team between December 2017 and May 2018. We identified the patients who received second-generation metaphyseal fixation stems (Group 2). Group 2 results were then compared with our database of patients who received first-generation stems (Group 1). Results: Group 1: 82 THAs, of which, after a 1-year postoperative follow-up, 2 patients (2.44%) had complications, which were noted during surgery (a calcar fracture and a false route caused while preparing the femoral canal). Group 2: 49 THAs, 1 patient (2%) required femoral stem revision, due to aseptic loosening, 5 months after primary THA. Conclusions: In our experience, second-generation implants achieve clinical outcomes comparable to those obtained with first-generation implants, while also decreasing the risk of intraoperative complications associated with the placement of the implant. This method has shown to be reproducible and to have an easy learning curve for experienced surgeons.

Palavras-chave : Arthroplasty; uncemented prosthesis; metaphyseal fixation.

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