A case of popliteal artery entrapment syndrome presenting with acute limb ischaemia.

Popliteal artery entrapment syndrome (PAES) is caused by an anomalous anatomic relationship between the popliteal artery and the musculotendinous structures in the popliteal fossa. In the early stage of PAES, patients most commonly present with intermittent claudication. If we don't perform appropriate investigation, the diagnosis of PAES is easily missed and may lead to irreversible arterial damage. Thrombus formation in the damaged popliteal artery can cause complete obstruction of the popliteal artery leading to acute limb-threatening ischaemia.