Popliteal Artery Entrapment

A young, 30 year old athlete who developed claudication of the lower leg.

This is particularly noted when the patient sits on his haunches.

Note the soft tissue between the popliteal artery and the vein, and compression on the popliteal artery with the knee in extension and the foot in dorsi-flexion. The soft tissue is the medial head of gastrocnemius.
Marked increase in the velocity distal to the impingement of the medial head of gastrocnemius on the artery is also noted.

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    Petrie de Villiers

    A forced plantar flexion as well as dorsi-flexion causes compression on the popliteal artery.
    When angiogram is done the patient must be put erect with the forefoot on a small step and the patient must perform forced plantar flexion and dorsi-flexion while contrast is injected, which will demonstrate the impingement of the popliteal artery.

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