Popliteal Artery Entrapment Syndromes and Diagnostic Approaches

Popliteal artery entrapment syndromes encompass a group of rare disorders in which aberrant muscular or tendinous structures compress the popliteal artery, leading to exertional leg pain, intermittent claudication and, in advanced cases, distal ischaemia. Both anatomical variants—where the artery follows an anomalous course relative to the gastrocnemius muscle—and functional forms—where a normally positioned artery is compressed by a hypertrophied or malpositioned muscle—are recognised. Clinical assessment often reveals calf pain provoked by exercise and relieved by rest, but features overlap with chronic exertional compartment syndrome, medial tibial stress syndrome and other musculoskeletal conditions. A high index of suspicion guides the selection of imaging techniques. Duplex ultrasound with provocative plantarflexion and dorsiflexion manoeuvres provides real-time assessment of vessel calibre and flow velocity, though false positives can occur in asymptomatic individuals. Computed tomography angiography and magnetic resonance angiography offer detailed anatomical mapping of arterial narrowing and relationship to surrounding structures. Dynamic magnetic resonance angiography adds functional insight by capturing changes under stress. Invasive digital subtraction angiography remains a gold standard for definitive diagnosis and planning of surgical release or bypass procedures. Early recognition is essential to prevent thrombotic complications and preserve limb function, particularly in young athletes and military personnel. Emerging approaches, such as point-of-care ultrasound and tailored rehabilitation protocols, aim to expedite diagnosis and optimise post-operative recovery.

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Popliteal Artery Entrapment Syndromes and Diagnostic Approaches publication trend

The graph below shows the total number of articles in popliteal artery entrapment syndromes and diagnostic approaches across all publications each year (not limited to Nature Index journals).

Technical terms

Popliteal artery entrapment syndrome (PAES): A condition in which anomalous or hypertrophied muscular or tendinous structures compress the popliteal artery, causing ischaemic symptoms in the lower leg.

Claudication: Pain, typically in the calf muscles, induced by exercise and relieved by rest, due to insufficient blood flow.

Duplex ultrasound: A non-invasive imaging modality combining B-mode sonography and Doppler flow assessment to measure vessel diameter and blood velocity.

Computed tomography angiography (CTA): A radiographic technique that uses contrast-enhanced CT scanning to visualize arterial lumen and surrounding anatomy.

Magnetic resonance angiography (MRA): A non-invasive MRI technique using blood flow-sensitive sequences to depict arterial structures, often with dynamic stress manoeuvres for functional assessment.

References

1. Concurrent Chronic Exertional Compartment Syndrome and Popliteal Artery Entrapment Syndrome. Diagnostics (2024).
2. Functional Popliteal Artery Entrapment Syndrome: Poorly Understood and Frequently Missed? A Review of Clinical Features, Appropriate Investigations, and Treatment Options. Journal of Sports Medicine (2014).
3. Long-Term Results of Surgical Treatment for Popliteal Artery Entrapment Syndrome. Diagnostics (2024).
4. Surgical Treatment and Rehabilitation of Bilateral Popliteal Artery Entrapment Syndrome in a Young Boxer: A Case Report. Cureus (2023).
5. The reliability of duplex ultrasound in diagnosing popliteal artery entrapment syndrome: An observational pilot study. Journal of Radiation Research and Applied Sciences (2022).