Serum Metal Ion Concentrations in Paediatric Patients following Total Knee Arthroplasty Using Megaprostheses

Figure 2

Box plot showing the cobalt and chromium serum metal ion levels in the fixed hinge megaprosthesis group in proportion to the other prostheses and the control group. Patients with fixed hinge devices had higher concentrations of Co and Cr in the plasma compared to preoperative controls and patients with a standard rotating hinge device. These differences reached a statistically significant difference (Table 1).