Diabetic Foot Infections - Case Study - Painless Ulcer That Probed to Bone

Mild at the surface, moderate by depth, severe by her vital signs. One diabetic foot, presented at the bedside and reasoned all the way to the operating room. A senior resident walks an attending through Winifred Achebe, 64, with type two diabetes for eighteen years, three weeks of a plantar ulcer she never felt, and the morning her numbers changed the plan. What you'll learn: • How to read her history at the bedside: three weeks of full shifts on an open sole, an A1c of 9.4 percent, forty pack-years, and why absent pain means the alarm failed and not that the infection is mild • How poor perfusion, an ankle brachial index of 0.62 and absent pedal pulses lower the antibiotic concentration that actually reaches the wound bed • The exact severity thresholds: erythema over 0.5 but under 2 cm for mild, 2 cm or more or deeper structures for moderate, any foot infection plus two SIRS criteria for severe • Cleanse, debride, probe, then deep anaerobic and aerobic cultures, and why a surface swab reports colonisers instead of invaders • The four features that raise osteomyelitis risk, the blunt probe-to-bone technique with its hard gritty endpoint, and the layered IV regimen for moderate and severe disease Key takeaway: Depth and systemic illness assign the grade, and the grade, not the appearance of the wound, chooses the route, the spectrum and the surgeon. ⏱ Chapters: 0:00 The admission: three weeks of walking on a painless plantar ulcer 3:00 Nerve and vessel exam: absent monofilament, absent pulses, ABI 0.62 5:30 Neuropathy is three failures, and perfusion decides whether the drug arrives 8:01 Grading with a ruler: mild, moderate, severe and the SIRS criteria 10:11 Deep cultures, probing to bone, and building the IV regimen in layers 12:21 Four SIRS criteria, urgent debridement, and the pearls that prevent the miss Part of Teaching Service — Hospital Rounds: education for residents and advanced practice providers. For clinician and trainee education only. Not medical advice; verify against current guidelines and institutional protocols before applying to patient care. #DiabeticFootInfection #Osteomyelitis #DiabeticNeuropathy #CaseStudy #InfectiousDisease #InternalMedicine #HospitalMedicine #MedicalEducation #WoundCare #Residency