Urinary infections in total hip arthroplasty. Influences of prophylactic cephalosporins and catheterization.

We studied 359 patients retrospectively and 100 patients prospectively, all on cephalosporin prophylaxis. Urinary infections were eight times more frequent in catheterized patients; most were caused by Pseudomonas and Enterobacter. One patients had acute seeding in the arthroplasty site from a Pseudomonas urinary infection.