[Diffusion of fosfomycin into bone tissue in man].

Abstract

Fosfomycine diffusion into spongious and cortical bone was studied in 20 patients undergoing total replacement of the hip after an intravenous infusion of 4 g (1 g/h). The serum and bone samples were collected 1 h and 3 h after administration of the drug. Concentrations at 1 h were 105.0 +/- 12.4 micrograms/ml, 19.6 +/- 4.8 micrograms/g and 13.3 +/- 3.7 micrograms/g in serum, spongious bone and cortical bone respectively; at 3 h these concentrations had become respectively 67.8 +/- 15.9 micrograms/ml, 10.0 +/- 4.2 micrograms/g and 8.2 +/- 3.6 micrograms/g. Antibiotic levels in bone tissue decreased in direct ratio to corresponding serum values, the mean tissue/serum ratio remaining at 15 +/- 4%.