Popliteal artery entrapment syndrome – type 1

A 34 year old active man who exercises regularly developed a sudden onset of calf pain on the right.

He was sent for an ultrasonic investigation.

Unfortunately the colour did not project well in the artery and vein on the scan.

The hyperechoic line underneath the popliteal artery is the posterior aspect of the medial condyle.

No flow was seen in the popliteal artery due to markedly thickened arterial walls with a narrowed, thrombosed canal.

During surgery, the ultrasound findings were exactly confirmed, with medial deviation of the artery and the artery being entrapped between the medial head of gastrocnemius and the posterior aspect of the medial condyle.

This corresponds with a type 1 popliteal artery entrapment syndrome.


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