Early (<1 year) primary patency rates of the medial approach were significantly better than the posterior approach, possibly because of the limited posterior exposure. However, in the absence of a significant difference in long-term primary and secondary patency rates between the posterior and medial approach, and considering the substantial risk of aneurysm growth after medial approach (up to 22%), the posterior approach might be the surgical method of preference for PAA repair in the long run.

Knowledge of anatomic variations of the popliteal artery is essential for the management of peripheral vascular disease and in orthopedic surgery. The aim of this study was to perform an overview of the literature describing variations of the popliteal artery. To identify relevant literature, we performed a systematic search on MEDLINE, EMBASE, and the Cochrane Database of Systematic Reviews. We included 4 studies of anatomic dissections and 11 radiologic retrospective series, comprising 7671 limbs, and a variation in popliteal branching was seen in almost 10%. The 3 most frequent variations in branching are a high origin of the anterior tibial artery, the trifurcation of the anterior tibial artery, peroneal artery, and posterior tibial artery, and a hypoplastic or aplastic posterior tibial artery. Awareness of the terminal branching pattern of the popliteal artery before intervention enhances the planning for successful operations and may reduce the incidence of serious, unexpected arterial injury.

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The coronavirus disease 2019 (COVID-19), a viral respiratory illness caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been described to predispose to thrombotic disease in both the venous and arterial circulations. We report four cases of an acute arterial occlusion in COVID-19 patients and literature review on the occurrence of arterial thrombosis in patients with COVID-19. Our findings demonstrate that physicians should be vigilant for signs of thrombotic complications in both hospitalized and new COVID-19 patients.

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