ArticleJournal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology2018
Long-term results of the M
Article in Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 5 citations in OpenAlex.
- Long-term clinical outcomes of the Biomet M2a-38: a retrospective review of 335 total hip arthroplasty cases.Journal of orthopaedic surgery and research · 2023Article
- Survival rates of different bearing surfaces with the same model of stem in total hip arthroplasty: predictive factors for revision surgery.Archives of orthopaedic and trauma surgery · 2023Article
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4 authors at 1 institution in 1 country.
Funding
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Abstract
backgroundLarge-diameter head metal-on-metal (MoM) bearings in total hip arthroplasty (THA) are associated with increased whole blood levels of chromium (Cr) and cobalt (Co), adverse reactions to metal debris (ARMD) and poor survival rates. The prevalence of high metals concentrations, ARMD and the risk of revision surgery may vary significantly among different prostheses and long-term studies are few. This single-center study reports the long-term results of the 38-mm MoM bearing system. MATERIALS AND
methodsBetween 2003 and 2009, 80 patients received primary cementless THA using the large head metal-on-metal articulating surface M
resultsTwo cups were revised. The cumulative implant survival rate was 98% at 10 years and 74% at 13 years. In the whole sample, the median Co and Cr concentrations were 4.8 µg/L (IQR 1.2-4.9 µg/L) and 2.5 µg/L (IQR 0.6-3.0 µg/L), respectively. The incidence of Co or Cr levels > 7 μg/L was 15.5% and the incidence of ARMD was 3.8%. Co and Cr levels showed no correlation with cup inclination, Harris Hip Score, or total Hip Disability and Osteoarthritis Outcome score.
conclusionsOur results confirm that the problems of release of metal ions with the possible increase of metal circulating levels and of adverse reactions may also occur in the long term with this brand of MoM large head, and that a structured follow-up program is mandatory. LEVELS OF EVIDENCE: Level 4.
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