20.500.12556/DKUM-87410 Dual-modular versus single-modular stems for primary total hip arthroplasty a long-term survival analysis Background and Objectives: Increased revision rate of dual-modular (DM) femoral stems in primary total hip arthroplasty (THA) because of modular-neck breakage and adverse local tissue reactions (ALTRs) to additional junction damage products is well established and some designs have been recalled from the market. However, some long-term studies of specific DM stems did not confirm the inferiority of these stems compared to standard single-modular (SM) stems, and a head-to-head comparison THA is missing. The objectives of this multicentre study were to determine the survivorship and complication rates of a common DM stem design compared to a similar SM stem. Materials and Methods: In a time frame from January 2012 to November 2015, a cohort of 807 patients (882 hips) consecutively underwent primary cementless THAs at two orthopaedic centres. 377 hips were treated with a Zweimüller-type DM stem THA system and 505 hips with a similar SM stem THA system, both including a modern press-fit acetabulum. Kaplan-Meier survivorship and complication rates were compared between both groups in a median follow-up of 9.0 years (maximum, 9.9 years). Results: The 9-year survivorship of the DM stem THA system (92.6%, 95% CI 89.9–95.3) was significantly lower than that of the SM stem THA system (97.0%, 95% CI 95.2–98.8). There were no differences in revision rates for septic loosening, dislocation, and periprosthetic fractures between the two groups. One ceramic inlay and one Ti-alloy modular neck breakage occurred in the DM stem THA system group, but the main reason for revision in this group was aseptic loosening of components. Conclusions: The survivorship of the DM stem THA system was lower than the similar SM stem THA system in a comparable clinical environment with long-term follow-up. Our results confirmed that no rationale for stem modularity exists in primary THAs. total hip arthroplasty modular necks exchangeable necks survival rate complications revision rate primary hip replacement prosthesis Ti-alloy endoproteza kolka modularni vratovi zamenljivi vratovi stopnja preživetja zapleti stopnja revizije primarna endoproteza kolka proteza true false true MDPI Angleški jezik Slovenski jezik Znanstveno delo 2024-03-18 13:42:01 2024-03-18 14:48:02 2024-03-19 03:27:36 0000-00-00 00:00:00 2023 0 0 Str. 1-10 Št. 2, št. članka 290 Letn. 59 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2022-12-21 2023-01-31 2023-02-02 617.3 141004291 10.3390/medicina59020290 1648-9144 Fokter-2023-Dual-Modular_Versus_Single-Modular.pdf Fokter-2023-Dual-Modular_Versus_Single-Modular.pdf 1 EF6EA837B5125B8684A5FAB871A04079 1a208357a5793f91ca7f7abe06b269c6fe512d8e61682ae1fe62169e70c9b6d8 49e15c97-e528-11ee-9a93-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=176951 https://doi.org/10.3390/medicina59020290 0 e5f4d97f-e524-11ee-9a93-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=176950 Medicinska fakulteta 0 0 0