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A popliteal artery aneurysm (PAA) is a bulging of the popliteal artery. [1] A PAA is diagnosed when a focal dilation greater than 50% of the normal vessel diameter is found (the normal diameter of a popliteal artery is 0.7-1.1 cm). PAAs are the most common aneurysm of the peripheral vascular system, accounting
It is most easily palpated (felt) with the knee partially flexed. Diagnosis is confirmed by ultrasonography, although if needed and there is no suspicion of a popliteal artery aneurysm then aspiration of synovial fluid from the cyst may be undertaken with care. An MRI image can reveal presence of a Baker's cyst.
It travels on the medial side of the popliteal artery. [1] It is superficial to the popliteal artery. [2] As it ascends through the fossa, it crosses behind the popliteal artery so that it comes to lie on its lateral side. It passes through the adductor hiatus (the opening in the adductor magnus muscle) to become the femoral vein. [1] [3]
A popliteal aneurysm may be distinguished from other masses by palpable pulsations (thrills) and abnormal arterial sounds detectable with a stethoscope. Because the artery lies deep to the tibial nerve, an aneurysm may stretch the nerve or compress its blood supply (see vasa vasorum). Pain from such nerve compression is usually referred, in ...
Angiograms of a patient diagnosed with popliteal artery entrapment syndrome of the left lower extremity. Image A shows a neutral popliteal artery before provocative maneuvers. Images B and C show the obstruction (orange arrows) enhanced with provocative maneuvers of plantar flexion and dorsiflexion, respectively.
popliteal artery, a continuation of the femoral artery; small saphenous vein (termination) [3] Popliteal lymph nodes and vessels [3] It is of note that the common fibular nerve also begins at the superior angle of the popliteal fossa. [4]
The "neck" of the pseudoaneurysm is the narrow path of blood flow between the artery, through the arterial wall, and into the pseudoaneurysm cavity. The artery, neck, and pseudoaneurysm are seen on ultrasound. The ultrasound probe can be pushed firmly against the patient's skin to compress the neck of the pseudoaneurysm for usually about 20 ...
Smaller arteries carry blood supply from the popliteal artery to the calf and into the foot. [4] Blockages caused by plaque build-up or atherosclerosis in any of these arteries can reduce leg blood circulation, causing leg pain that may interfere with daily life. [4] Standard popliteal bypass surgery involves the bypass of the popliteal artery. [5]