In 12 patients undergoing a revision hip arthroplasty after a failed metal-on-metal primary hip arthroplasty, the effectiveness of intraoperative cell salvage (ICS) in removing metal ions was investigated. Samples of blood collected during surgery were filtered using 2 ICS devices. The samples had the concentrations of cobalt (Co) and chromium (Cr) measured before and after filtration. There was an average reduction of 76.3% for Cr concentration and 78.6% for Co concentration after ICS filtering. The Co-to-Cr ratio before and after filtration was similar. At the present time, these salvage systems should be used with caution in the patient undergoing revision of metal-on-metal bearing surfaces.
Reijngoud, L. W., Pattyn, C., De Haan, R., De Somer, F., Campbell, P. A., Gill, H. S., & De Smet, K. A. (2009). Does intraoperative cell salvage remove cobalt and chromium from reinfused blood? Journal of Arthroplasty, 24(7), 1125-1129. https://doi.org/10.1016/j.arth.2008.06.019