Which condition might cause limb loss due to embolism/occlusion from an aneurysm?

A popliteal aneurysm is a localized enlargement of the popliteal artery, which runs behind the knee. Such an aneurysm can become a significant risk factor for embolism, particularly if a thrombus (a blood clot) forms within the aneurysm and then dislodges. When this occurs, it can travel downstream and occlude smaller arteries in the leg, leading to limb ischemia and potential limb loss if not treated promptly.

The mechanism behind this risk is related to the turbulent blood flow and potential stasis of blood within the aneurysm, which creates an environment conducive to clot formation. Once a clot breaks free, it can obstruct blood flow to critical areas of the limb, resulting in acute limb ischemia, where tissues are deprived of oxygen-rich blood.

Conditions like aortic dissection, deep vein thrombosis, and Raynaud's phenomenon do not typically lead to limb loss from embolism or occlusion stemming from an aneurysmal process. Aortic dissection involves a tear in the aorta's inner layer and can, in severe cases, lead to decreased perfusion to limbs, but the primary concern is usually related to cardiac complications rather than limb loss directly from embolism. Deep vein thrombosis generally involves venous cl