ABOVE-KNEE AMPUTATION STUMP ISCHEMIA: A SURGICAL CHALLENGE IN PREVENTING DEATH

  • Inês Antunes Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Carlos Pereira Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Gabriela Teixeira Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Carlos Veiga Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Daniel Mendes Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Carlos Veterano Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Henrique Rocha Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • João Castro Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
  • Rui Almeida Serviço de Angiologia e Cirurgia Vascular, Centro Hospitalar do Porto
Keywords: Stump ischemia, hip disarticulation, deep femoral artery revascularization, above-knee amputation

Abstract

Introduction: Above-knee stump ischemia is a serious condition. If left untreated usually courses with progression to irreversible ischemia. Without treatment the path from here usually leads to hip disarticulation and death. Our aim is to present our most recent experience in stump revascularization.

 

Material/Methods: We retrospectively reviewed all patients with above-knee stump ischemia treated in our institution between July 2018 to March 2019.


Results: We present four clinical cases treated in our institution in the last nine months. Two of them presented with non-acute stump ischemia with pain and skin lesions developed after minor trauma several months after surgery and stump healing. In both cases the computed tomography angiography (CTA) showed occlusion of the common femoral artery (CFA) and was inconclusive regarding the status and quality of the deep femoral artery (DFA). Despite this, ischemia severity deemed obligatory an attempt to revascularization, DFA was surgically exposed and proved to be an adequate target run off to a bypass. In the other two, the ischemia of the stump was acute. In one patient it was after surgical treatment of an ipsilateral false aneurism of the CFA (with ligation of the EIA) treated with a bypass from the EIA to both the superficial and DFA. The other was a patient admitted with aortic bifurcation occlusion and irreversible right leg ischemia that was submitted to primary above-knee amputation. In the next postoperative days, the patient developed severe stump ischemia. An axillo femoral bypass and proximal re-amputation was performed. Three patients resolved the stump ischemia and fared well, the last one died in the postoperative period.


Discussion/Conclusions: Above-knee stump ischemia usually leads to progressive stump degradation/necrosis/infection, eventually leading to death. When the common/deep femoral arteries are occluded, re-amputation is usually insufficient and progression of ischemia can dictate the need for a hip disarticulation, a very aggressive and mutilating procedure with high rate of morbidity and mortality that do not prevent progression to pelvic ischemia and death. Revascularization of above-knee amputation stump, based on DFA or hypogastric revascularization, is the best therapeutic alternative and should be attempted even in frail patients. We believe that our small series reinforces the idea that stump revascularization is possible and can save both: stump and life.

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Published
2019-10-16
Section
Original Article