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An embolus is a blood clot or other foreign material in a vessel located distal to the place of origin of the clot or foreign material. Arterial embolectomy, designed to restore patency of an acute occluded vessel has great advance since Fogarty balloon catheter was introduced in 1963. At present, in spite of all these advances responsible for the current higher rate of limb salvage, limb loss and mortality rate are still high in a certain group of patient, and concept of arterial embolism and its management are still undergoing changes. Twenty one cases of arterial thromboembolism, which were seen during the periods of 4 years and 7 months from January 1983 to July 1987 at Chonnam National University Hospital, were studied and divided into two groups, good prognosis group and poor prognosis group according to the absence or presence of death and limb loss, and the prognostic factors were evaluated. The results were as follows; 1) The arterial embolism was most frequently seen in 5th decade in good prognosis group (41.6%) and 7th decade in poor prognosis group (44.5%). Male: female ratio were 8:4 in good prognosis group and 8:1 in poor prognosis group. 2) In good prognosis group, no identified diseases were seen in most cases (7 cases: 58.3%) and atherosclerotic heart disease was most common in poor prognosis group (4 cases:44,4%). 3) The most common clinical manifestation was pain in both groups. 4) Time interval from onset of symptoms to treatment; Within 1 day was most common in good prognosis group (5 cases; 41.7%) and over 1 month was most common in poor prognosis group (6 cases: 66.7%). 5) The most common site of embolism was femoral artery in both groups. 6) Operations were done in 15 cases, among them, 9 cases were good prognosis and 6 cases were poor prognosis. Most common anesthesia was local anesthesia in both groups. 7) The operative mortality was 20%.