摘要：<p class="headinganchor"> Diabetic foot is a long-term complication of diabetes mellitus that results directly from peripheral arterial disease or sensory neuropathy affecting the feet in diabetes mellitus. Diabetic foot is rare, but potentially lethal complication associated with the diabetes. The management of diabetic foot infections requires assessing the microbial etiology, attentive wound management, good nutrition, antimicrobial therapy and glycemic control. In several clinical circumstances, surgical resection is preferable.</p><p class="bulletindent1"> A 65-year-old patient with 2-month necrosis of the second toe of the left foot and recurrent fever is presented. Diabetic foot developed. Citrobacter koseri was isolated from bone cultures. Intravenous treatment with <em>amoxicillin</em> + <em>clavulanic acid and</em> metronidazole was administered for 2 weeks and the wound was poorly recovered. After a surgical consultation, the patient was qualified for the amputation of the second toe of the left foot.</p>
