患者，男，46岁。以左足外伤后溃烂月余来院就诊。l个月前不值被树枝刺伤左脚背部，出血不止，经按压后止血，未引起重视。第2天，伤口处肿胀明显，疼痛奇痒，经当地卫生所清创换药2次，症状反而加重，后辗转于县医院及外乡卫生院，给予清创加抗生素及外敷中药治疗一月余，创面 Patient, male, 46 years old. To left foot ulcer after injury to the hospital for treatment. Not worth l months ago stab wound left foot back, bleeding more than by the hemostasis after pressing, did not attract attention. On the second day, the wound was swollen obviously and the pain was itchy. The debridement was changed by the local health department twice before the symptoms worsened. Afterwards, the wounds were taken to county hospitals and township hospitals for more than one month Wound