足部原发恶性软组织肿瘤非常少见[1]。由于其低发病率、症状不典型及足踝部结构的特殊性,往往导致漏诊或误诊,以致后期手术切除不能达到很好的安全边界,截肢(趾)往往成为惟一的选择[2-3]。保留足后跟(皮瓣)的手术,如Chopart截肢、Syme截肢等,主要用于血管疾病、创伤等导致的截肢。最大的特点是能够保留下肢部分正常本体感觉反射,从而使患者术后配假体行走时更平稳、更 Feet of primary malignant soft tissue tumors is very rare [1]. Due to its low morbidity, atypical symptoms and the particularity of the structure of the foot and ankle, it often leads to missed diagnosis or misdiagnosis, so that surgical excision can not reach a good safety margin and amputation (toe) is often the only choice [2-3] . Keep the heel (flap) surgery, such as Chopart amputation, Syme amputation, mainly for vascular disease, trauma caused by amputation. The biggest feature is to be able to keep part of the normal sense of lower body reflex, so that patients with prosthesis after walking more stable, more