case_images: PMC10022727_01
case_images: Patients' foot wound: female, 70 years old, with right foot ulcer.
case_images: fonc-13-1089578-g001.jpg
case_images: PMC10022727_01_fonc-13-1089578-g001.jpg
case_images: f1
case_images: After standard treatment including blood sugar control, blood pressure control, debridement and antibiotic therapy, there was no progress noted, and a black line in the shape of a half-moon appeared ( Figure 1 ).
case_images: PMC10022727_02
case_images: Patients' foot wound. female,66years old, with blackening at the end of the third toe of the right foot.
case_images: fonc-13-1089578-g002.jpg
case_images: PMC10022727_02_fonc-13-1089578-g002.jpg
case_images: f2
case_images: Without satisfactory results, the wound remained unhealed and become black ( Figure 2 ).