Chronological changes of serum chromium levels after modern metal-on-metal total hip arthroplasty.

We determined changes in serum chromium concentration every 6 months up to 3 years after implantation in 44 patients (mean age 63 (49-79) years, 35 women) who underwent modern metal-on-metal total hip arthroplasty (Metasul). The serum chromium levels increased between the first and second year after implantation (1 year: 1.05 (SD 0.

Transfemoral approach for revision total hip arthroplasty.

We performed revision total hip arthroplasty on 12 patients via the transfemoral approach because difficulty with surgery was anticipated preoperatively. The total hip score improved in all of the patients. Radiographically, there were no radiolucent lines around the acetabular and femoral components, but one hip still showed sinking of the stem by 2 cm.

Cobalt and chromium concentrations in patients with metal-on-metal and other cementless total hip arthroplasty.

We measured the cobalt and chromium concentrations in the serum and urine of 32 patients with current designed metal-on-metal total hip arthroplasty and 43 patients with conventional metal on ultrahigh molecular weight polyethylene (UHMWPE) cementless total hip arthroplasty. The results of our study showed that the serum and urine chromium concentrations increased in 37.5% and 90.