High Risk of Failure With Bimodular Femoral Components in THA

Clinical Orthopaedics and Related Research
Aidin Eslam PourJ David Blaha

Abstract

The bimodular femoral neck implant (modularity in the neck section and prosthetic head) offers several implant advantages to the surgeon performing THAs, however, there have been reports of failure of bimodular femoral implants involving neck fractures or adverse tissue reaction to metal debris. We aimed to assess the results of the bimodular implants used in the THAs we performed. We asked: (1) What is the survivorship of the PROFEMUR(®) bimodular femoral neck stems? (2) What are the modes of failure of this bimodular femoral neck implant? (3) What are the major risk factors for the major modes of failure of this device? Between 2003 and 2009, we used one family of bimodular femoral neck stems for all primary THAs (PROFEMUR(®) Z and PROFEMUR(®) E). During this period, 277 THAs (in 242 patients) were performed with these implants. One hundred seventy were done with the bimodular PROFEMUR(®) E (all are accounted for here), and when that implant was suspected of having a high risk of failure, the bimodular PROFEMUR(®) Z was used instead. One hundred seven THAs were performed using this implant (all are accounted for in this study). All bearing combinations, including metal-on-metal, metal-on-polyethylene, and ceramic-on-ceramic, ...Continue Reading

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Oct 31, 2017·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·José M Pelayo-de-TomásJosé Antonio Blas-Dobón
Jan 2, 2018·The Open Orthopaedics Journal·Janie BarryPascal-Andre Vendittoli
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Apr 17, 2020·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Johnathan R LexGeorge C Babis
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Apr 15, 2021·Zeitschrift für Orthopädie und Unfallchirurgie·Matthias SukoppFrank Seehaus
Apr 18, 2021·BMC Musculoskeletal Disorders·Samo K FokterZmago Krajnc

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