Detection of cobalt in synovial fluid from metal-on-metal hip prosthesis: Correlation with the ion haematic level

Alina Beraudi, Simona Catalani, Monica Montesi, Susanna Stea, Alessandra Sudanese, Pietro Apostoli, Aldo Toni

Research output: Contribution to journalArticlepeer-review

Abstract

Hip replacement with large metal-on-metal (MoM) coupling has recently been under attention for its metal ions release, inducing several disorders. Since the blood level toxicity threshold for cobalt is known, the aim of this work is to determine whether Co serum and blood levels correlate with the synovial fluid level. Beside this, the synovial fluid Co from patients without prosthesis has also been measured. Co has been determined in 54 samples (32 unilateral MoM and 22 controls) with inductively coupled plasma mass spectrometry in the three matrices. In the prosthesized group, cobalt was significantly higher compared with controls and in the synovial fluid it strongly correlated with whole blood Co (p=0.847) and serum (p=0.855). Moreover, the Co levels into whole blood and serum were significantly different. In conclusion, haematic Co concentration correctly reflects Co local level.

Original languageEnglish
Pages (from-to)699-705
Number of pages7
JournalBiomarkers
Volume18
Issue number8
DOIs
Publication statusPublished - Dec 2013

Keywords

  • Articular capsule
  • Metal exposure
  • Toxicity

ASJC Scopus subject areas

  • Biochemistry
  • Clinical Biochemistry
  • Health, Toxicology and Mutagenesis

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