M86.271

Clinical Causes: Bacterial infections, most commonly Staphylococcus aureus, entering the bone via an open wound, bloodstream, or nearby tissue infection Spread of infection from adjacent soft tissue or joint infections Repeated trauma or injury to the ankle or foot which may introduce bacteria Pre-existing conditions such as diabetes that impair immune response and wound healing Surgical procedures involving the ankle or foot that may introduce pathogens

Key Symptoms: Localized pain in the ankle and foot area Swelling and tenderness around the affected bones Reduced range of motion in the ankle and foot Warmth and redness over the affected region Possible fever and general malaise in some cases Discharge or pus if the infection progresses or forms abscesses Persistent, dull ache that worsens with activity or pressure

Diagnosis Path: Physical examination to assess tenderness, swelling, and signs of inflammation Imaging tests such as X-rays, MRI, or bone scans to identify areas of infection or bone destruction Blood tests including complete blood count (CBC) and erythrocyte sedimentation rate (ESR) to detect signs of inflammation Bone biopsy or tissue culture to identify the causative bacteria and guide antibiotic therapy Assessment of wound or ulcer margins if present

Treatment Protocols: Prolonged course of targeted antibiotics based on culture results Hospitalization in severe cases for intravenous antibiotic administration Surgical intervention to remove infected tissue or drain abscesses if necessary Rest and immobilization of the affected limb to promote healing Pain management using appropriate medications Monitoring for signs of recurrence or complications through follow-up imaging and lab tests Addressing underlying conditions such as diabetes to improve overall outcomes