Abstract

VEGA, Carlos A. et al. Análisis clínico y radiográfico del vástago de cadera no cementado “CEMENTFREE”® de fabricación nacional. Resultados a corto plazo. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2022, vol.87, n.3, pp.316-324. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2022.87.3.1489.

Introduction: The stability of the femoral component and its resistance to subsidence are critical factors to achieve correct osseointegration and subsequent clinical success in cementless total hip arthroplasty. Few studies have evaluated the results of nationally manufactured stems, even in the short and medium term. Our objective is to clinically and radiologically analyze patients undergoing a total hip replacement with a nationally manufactured femoral component (Cementfree® stem). Materials and Methods: We carried out a retrospective study on patients who had undergone a total hip replacement with the Cementfree® stem between January 2015 and August 2020 by the same surgeon and at the same institution. Results: 46 uncemented stems were implanted in 42 patients with an age range between 60 and 81 years. The average follow-up was 3 years, with a minimum of 1 year and a maximum of 5 years. There was an evident improvement in the Harris Hip Score (an average of 47 preoperatively vs. 93 after surgery). The revision of the stem for aseptic loosening, in the Kaplan Meier analysis, demonstrated a 100% survival rate at 5 years. Conclusion: According to the results obtained in this research, hip arthroplasty with the nationally manufactured Cementfree® stem has proven to be an option comparable to other imported stems in terms of short-term clinical and radiographic outcomes. An evaluation of the outcomes in the medium and long term is pending.

Keywords : Arthroplasty; cementless prosthesis; metaphyseal fixation; osseointegration.

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