High Revision Rate for Large-head Metal-on-metal THA at a Mean of 7.1 Years: A Registry Study

Clinical Orthopaedics and Related Research
Matti SeppänenKeijo T Mäkelä

Abstract

Large-diameter head metal-on-metal (MoM) THA has largely been abandoned as a result of higher than anticipated revision rates. However, the majority of these implants are still in situ. Although earlier reports from the Finnish Arthroplasty Register noted similar short-term survivorship between large-diameter head MoM THA and conventional cemented THA, longer term survivorship of this population is unclear. Although reported revision rates for this implant group have been high, the majority of these implants have not been revised and followup is important to improve long-term management. The purposes of this study were (1) to compare the 10-year competing risk survivorship of large-diameter head MoM THA with the survivorship of conventional THA in the Finnish Arthroplasty Register; (2) to report the large-diameter head MoM THA survival at the manufacturer/brand level; and (3) to identify the most common reasons for revision of large-diameter head MoM THA in the Finnish Arthroplasty Register. The six most commonly used large-diameter head (≥ 38 mm) MoM THA devices in Finland between years 2004 and 2013 were selected (n = 10,959 implants). The completeness of the Finnish Registry is > 95% in primary THA and patients are censored ...Continue Reading

References

Jan 1, 1991·Acta Orthopaedica Scandinavica. Supplementum·P PaavolainenP Slätis
Sep 28, 2004·Statistics in Medicine·Stein Atle LieStein E Vollset
Sep 5, 2008·PLoS Medicine·Nokuthaba SibandaUNKNOWN Steering Committee of the National Joint Registry (NJR) for England and Wales
Jul 4, 2013·Scandinavian Journal of Surgery : SJS : Official Organ for the Finnish Surgical Society and the Scandinavian Surgical Society·J MokkaA Eskelinen
Dec 19, 2013·Scandinavian Journal of Surgery : SJS : Official Organ for the Finnish Surgical Society and the Scandinavian Surgical Society·M JunnilaK Mäkelä
Oct 21, 2016·Acta Orthopaedica·Matti SeppänenKeijo T Mäkelä

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Sep 10, 2020·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Catherine Van Der Straeten

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