“…39 Patient-specific systemic factors such as osteoporosis, obesity, diabetes mellitus, smoking, alcohol, and sensory neuropathy are additional risk factors for nonunion of the ankle arthrodesis. 40,41 Local factors such as infection and poor vascularity as well as critical soft tissues (such as wound healing disturbances, severe swelling, soft tissue inflammation/cellulitis, or a bad foot and ankle soft tissue envelope 7,9 ) are further risk factors. 13,41 In our study, both cohorts contained patients with fistulas or abscesses and cellulitis.…”