Endovascular revascularization of an occluded persistent sciatic artery for chronic limb-threatening ischemia in a patient with Coronavirus Disease 2019

Persistent primitive sciatic artery: a case report and review of the literature

“…Around 12 mm, the embryo sciatic artery develops into a superficial femoral artery. At 8 months of embryonic development, the superficial femoral artery dominates the sciatic artery [3]. Persistent Sciatic Artery is prone to ischemia and aneurysms that may lead to amputation of the affected limb.…”

“…PSA is highly prone to an aneurysm probably due to the anatomical location that predisposes it to injury and potential congenital arterial elastic tissue anomaly. The diagnosis of PSA anomaly can be made by CT-angiography [3]. They are of doubtful clinical significance, especially when they are found incidentally while doing imaging [4] Pillet et al have classified Persistent Sciatic Artery into 5 types described below with important clinical significance because management of different medical conditions that affect PSA can be managed based on classification.…”

“…They are of doubtful clinical significance, especially when they are found incidentally while doing imaging [4] Pillet et al have classified Persistent Sciatic Artery into 5 types described below with important clinical significance because management of different medical conditions that affect PSA can be managed based on classification. Pillet et al classified this anatomical variation into 4 categories, and Gauffre added 5th class where the Persistent sciatic artery originates from the medial sacral artery [3].…”

“…Several authors hypothesized that the sciatic artery persists when the femoral arterial system is hypoplastic to deliver adequate blood flow to the developing limb [4]. When the PSA is occluded, it can be managed by Bypass surgery [3]. The management options, in general, are governed by the individual patient's symptoms and classification.…”