We treated 52 patients with orally administered ciprofloxacin. In this study of 34 men and 18 women who completed therapy and who could be evaluated, there were 29 patients with nonhematogenous osteomyelitis, 20 patients with skin or soft-tissue infections, and 3 patients with joint infections. During the study, 92 isolates of pathogenic facultative aerobic bacteria, including 37 members of the family Enterobacteriaceae, 30 Staphylococcus aureus isolates, and 21 Pseudomonas aeruginosa isolates, were recovered, and 88 (96%) of the isolates were found to be susceptible to ciprofloxacin. Of the 29 patients with osteomyelitis, 14 have not experienced relapse after a follow-up of at least 1 year. Overall, 61 % of infections were resolved, as judged by both clinical and microbiological criteria, during therapy. One patient developed Streptococcus salivanius sepsis during ciprofloxacin therapy, and one patient developed a rash which required discontinuation of ciprofioxacin. Otherwise, there were no serious reactions or complications.Ciprofloxacin is a quinoline carboxylic acid compound with significant in vitro activity against members of the family Enterobacteriaceae (MIC for 90% of the strains

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