Diabetic foot infection (DFI), a multi-facetted disease requiring a multidisciplinary approach for successful treatment, mostly affects the forefoot. Calcaneal osteomyelitis (CO) is an uncommon presentation of DFI with a somewhat different epidemiology, clinical features, and approach to management. These patients, compared to those with non-calcaneal DFI, more often require special surgical techniques and off-loading approaches. In this narrative review targeted to non-surgical clinicians, we explore how CO differs from other types of DFI affecting other anatomical locations. Based on our review of the literature and personal experience, we also highlight important issues regarding the management of CO osteomyelitis, including the need for specialized surgical approaches.